Steven continued to follow Jet as he lead him out of Beach City and further down the road that left the town. They walked down the road for about five miles, until they eventually reached a green, hilly area to the side of the road. On top of a flat, elevated spot in this area, there was a rather cozy looking house.

"Here it is Steven." said Jet. "This is where I live."

"I never knew you lived this close to Beach City."said Steven. "I'm surprised we've never crossed paths with each other before we became friends."

Jet made his way towards the house with Steven, and they went inside. They navigated their way through the house until Jet stopped at a set of stairs that just seemed to lead straight down into a dark hole.

"Down those stairs is the basement." said Jet. "She's down there."

They climbed down the stairs until they reached the very bottom. Steven was amazed at what he saw down there. They were in what appeared to be some sort of underground cavern or cave. Embedded all along the walls were a strange type of crystal the seemed to give of a warm light that illuminated the whole area. Scattered all throughout the cavern were what appeared to be various Gem artifacts and pieces of Gem technology, many of which Steven had seen before and recognized. In the middle of the room was what looked like a warp pad, but Steven had never been to this one before, so it was likely that this one probably didn't work anymore, unlike the others he's used in the past.

"There's a lot of Gem stuff here." said Steven. "How'd you get all of this?"

"My dad collects this stuff." said Jet. "He's very interested in all sorts of Gem technology, and he studies it in his spare time. He's a scientist that works at a research institute somewhere, but nobody knows about this hobby of his. He's probably the one human on Earth that knows more about Gems than anyone else because of how much he's studied them. This cavern was already here way before my house was built though. It apparently had some sort of connection to Gems in the past."

"This is cool." said Steven. "So you just have all this Gem stashed down here?"

Jet then walked over to one of the Gem artifacts nearby. It appeared to be a bell shaped cylinder with a hole going straight through the top of it.

"Hey Steven, you know what this is?" asked Jet.

"That's a Wailing Stone." said Steven.

"Yeah, it is." said Jet. "They make a really annoying sound when they're activated. A word of advice, don't try to bury them when they're turned on. It'll cause a miniature earthquake."

"It's a good thing I didn't do that when the one at the temple was going off." said Steven.

"Are you ready to meet her?" asked Jet.

"Yes." said Steven.

Jet then led him to another part of the room, which had a large crystal orb or sphere resting against the wall.

"Well, here she is." said Jet.

Steven looked up at the sphere an inside he saw what appeared to be the crystallized form of a woman, as if she were frozen in time. Steven could tell right away that she was a Gem. She had a graceful beauty to her, almost like Steven's mother Rose, and all down her back she had long, flowing black hair, which seemed to spike a little bit at the ends. She glowed with a radiant, black light that illuminated her figure. Steven also noticed that at the spot where her gem would have been, it was missing, and it was the same place on her body where Jet's gem now resided on his.

"That's your mom?" said Steven, mesmerized. "She's so beautiful."

"Hello mom." said Jet, hugging the crystallized monolith that contained his mother. "I'm home now." From the outside, the action seemed pretty pointless, almost as if Jet were just hugging a lifeless, immovable statue. Even if he was incapable of interacting with her in any way, the very fact he could still touch her made all the difference to him.

"How'd she end up like this?" asked Steven, curious. "When my mom gave birth to me, she had to give up her physical form to bring me into the world."

"My dad told me that right after I was born, my mom did something unexpected." said Jet. "Before her physical form could fade away, she used the last of her Gem powers to try to bubble herself in an effort to preserve what was left of her body. After that, the Gem bubble she made around herself eventually crystallized into this monolith you see here now, which contains the crystallized remains of her physical body. She had done this in the hopes that one day we could find a way to bring her back and revive her physical form; something which my dad as a scientist has been working on in his spare time, as well as studying all of this Gem technology. However we can't remove her from the monolith, otherwise her form would fade away completely and be lost forever

"So this is what you meant by your mom was still here." said Steven. "Well, I hope you succeed in bringing her back, however unlikely it might be."

"At this point, we've begun to accept the reality that something like that is probably impossible." said Jet. "We can't both exist at the same time, so this is the only form my mom can take now."

"That must suck, being able to see her everyday, but not being able to talk to her." said Steven.

"It's not as bad as it seems." said Jet. "Actually, you might not believe me, but I think that she's sometimes able to talk to me through my dreams. I can hear her voice at night, and she tells me things, like how much she loves me."

After about a few minutes, Steven and Jet went back upstairs into the house, where they saw someone enter. It was Jet's father, who had just come home from work. Steven noticed that he seemed to somewhat look like Jet as well, and this is where the rest of his features came from.

"I'm home Jet." said Jet's father. "Today was a long day. I had to stay late at the lab to finish some reports."

'Hey dad." said Jet. "Look who I brought home with me. It's Steven."

"So you're Jet's new friend?" said Jet's father, looking at Steven. "He's told me so much about you. Even how you're a half-Gem and all, just like him."

"So you already know about that?" said Steven. "Well that'll make things easier. Now I won't have to explain as much, like I had to with Connie's mom and dad."

"I'm also very familiar with Gem related things, so that's a plus too." said Jet's father.

"It's not everyday that I get to meet another human who understands Gem stuff." said Steven.

"I'm Jean by the way." said Jet's father. "Jean Nova."

"Pleased to meet, Mr. Nova." said Steven. "I'm Steven Universe."

"Wait, Universe?" said Jean, seeming to recognize that name. "Steven are you Greg's son?"

"Yes, I am actually." said Steven.

"Ah, Greg, I haven't heard from that crazy clown in years." said Jean, laughing. "So what's he up to now?"

"You knew my dad?" asked Steven.

'Knew him?" said Jean. "The two of us were old college buddies. We even tried to form a band once back in our college days. It was supposed to have some kind of space theme I think? Well, needless to say, it didn't really work out, and the two of us went our separate ways after that, though we still talked from time to time. The last I heard of him, he opened some car wash in Beach City. What ever happened to him."

"My mom happened." said Steven. "My dad fell in love with her and she eventually had me."

"You mean Rose?" asked Jean. "So things really did work out for the two of them then."

"You knew my mom too!?" Steven exclaimed.

"Of course I did." said Jean. "I'm familiar with all Gem related things here on Earth. Being friends with Greg, it was inevitable that I'd end up meeting her too."

"You've got to tell me about it." said Steven, his pupils becoming star shapes. "There's so much I want to know."

"Okay then." said Jean. "We might be here for a while though."

Steven, Jet, and Jean sat down and talked for what seemed like hours. Jean reminisced about the past, remembering Greg and Rose, and Steven filled in the gaps for him. Eventually, they finished and got up from the couch.

"That was a nice little trip down memory lane." said Steven. "I learned a lot of things about my mom and dad that even I didn't know."

"It sure was." said Jean.

"It's getting kind of late though." said Steven, looking at the clock on the wall. "I should probably head back home now."

"Take care then." said Jean.

"Bye Steven." said Jet.

"Hey Jet, I have an idea for what we should do tomorrow." said Steven.

"What?" asked Jet.

"Why don't I introduce you to the Crystal Gems?" said Steven. "I haven't told them yet that you're a half-Gem. I bet they'd love to meet you."

"Sounds good to me." said Jet. "I can't wait."

"Bye Jet." said Steven.

Steven then left the house and went on his way back home to the temple, where the Crystal Gems were waiting for him.


It was now the next day, and Steven had brought Jet with him to the temple to introduce him to the Crystal Gems. Garnet, Amethyst, and Pearl were all gathered around Jet as Steven was introducing him to them.

"This is new... and... unusual." said Pearl, somewhat perplexed and examining Jet's gem. "Steven, when you told us you had a unique friend, I didn't think this was what you meant."

"I actually just found out myself yesterday." said Steven.

"I never even considered the possibility that there could be other half-Gems here on Earth." said Pearl. "I thought Steven was the only one there ever was, at least the only on this planet anyway."

"It confuses me too sometimes." said Jet.

"This is so cool." said Amethyst. "Nice to meet you Jet."

"Nice to met you too." said Jet.

"Who would have thought there was another Gem out there that had a child with a human." said Amethyst.

"It really shouldn't be that surprising." said Garnet. "After the Rebellion, aside from all the corrupted Gems we've encountered, there are still a lot of Gems who are unaccounted for, and whose fate we still don't know."

Excited at the prospect of meeting a new Gem, each of the Crystal Gems introduced themselves to Jet and they spent the next few minutes talking with him and explaining certain Gem-related things to him. At the end of the conversation, Amethyst finally decided to ask the big question that the Crystal Gems were all thinking.

"So Jet..." asked Amethyst. "Whose kid are you?"

"My dad had told me that my mother was a Gem by the name of Onyx." said Jet.

The Crystal Gems were immediately shocked upon hearing this, and Pearl even gasped.

"Onyx?" said Pearl, noticeably taken aback. "Surely you don't "that" Onyx, right? It's probably some Onyx-class Gem, right... Onyx-class Gems are pretty common, aren't they?"

"Her full name was Onyx Quartz." said Jet.

The Crystal Gems were then hit by another wave of shock and awe. The only one who didn't seem to react to this was Steven, who obviously had no idea what any of this meant.

"Wait a minute, back up for a second." said Steven. "What are you guys talking about? I feel like there's something everyone here knows that I don't know. Who is this Gem named Onyx?"

"Ah, that's right, we've never told you about Onyx." said Pearl. "How do I put this Steven? Onyx was, well... she was the sister of your mother Rose Quartz."

"What!? My mom had a sister!" exclaimed Steven. "How come I never knew about this? Also, since when do Gems have siblings? I didn't even know they could."

"Well, to call her Rose's sister would be somewhat inaccurate." said Pearl. "By "sister", what I mean is that Onyx and Rose were grown together in the same batch of Gems in whatever Kindergarten they came from. She was her batch sister. To Gems, the whole concept of family is either completely nonexistent, or at least very different from what it is for you humans. For Gems, the closest things they could really call "family" would be the Gems who they grew in the same batch with in their Kindergarten. Among Gems in the same batch, there is a special bond that forms between them which lasts even after they leave their Kindergarten, one very similar to what you humans might call "siblings" The term we Gems have for this bond or relationship is called batch siblings."

"Does that mean that you guys had siblings too?" asked Steven.

"Of course it does." said Amethyst. "When I was forming in the Kindergarten here on Earth, I had a bunch of brothers and sisters who grew in the same batch with me. I'm not sure what happened to all of them though... They were all gone when I emerged. I think they all died."

Amethyst said that last part very casually, almost as if it were nothing but ancient history to her.

"I had many batch siblings too." said Pearl. "But unlike how it was with Amethyst, they were all Pearl-class Gems like me; and we all pretty much looked the same."

"So... what was my mom's sister like?" asked Steven, now very curious.

"Oh Onyx, she was amazing." said Pearl, now starting to act in a similar way to how she usually acted whenever she reminisces about Rose. "She emerged from their batch before Rose did, so that would technically make her Rose's older sister, but even still she loyally followed Rose and the two of them were very close. Many Gems often looked up to Onyx for strength and inspiration, as they did with Rose. She was a powerful Gem and a great warrior, just like your mother was, and together with Rose, the two of them formed an unstoppable team. Each of their strengths made up for the weaknesses of the other. It was like one was the sword and the other was the shield, and when they came together they were a force to be reckoned with. During the Rebellion, the Homeworld Gems greatly feared them, especially the Diamonds. Among the forces of the rebel Gems, Onyx was second only to Rose in terms of strength, and her power was considered comparable to that of a Diamond's, which is how she got the unofficial title of Black Diamond."

"A Diamond?" said Steven. "I've been hearing you guys use that term a lot recently when talking about the Homeworld Gems. Is there something special about them?"

"The Diamonds are the ultimate authority of the Gems." said Pearl. "They rule the entire Gem Empire from the capital on Homeworld. Each of the Diamonds rule their own sections of the known galaxy, which has all been divided up into their own personal territory. They each also have their own personal fighting forces under their direct command, who are all ready at a moment's notice to carry out their orders. The Diamonds are said to be the oldest and most powerful of all Gems, and your mother Rose used to be one of them. She was Pink Diamond."

"She was a Diamond?" said Steven, somewhat surprised. "That explains a lot. So who exactly are the Diamonds?"

"Aside from Rose, and Onyx, who was unofficially considered one, there are three others." said Pearl. "First there's Yellow Diamond, who you've probably already heard of. We will probably end up encountering her very soon now because of everything that's happened so far. She is the Gem who's in charge of developing all of the technology for the Gem Empire, and continuously finding ways to advance it. In the past, she often conducted many experiments on planets just like Earth. If you didn't know already, Yellow Diamond is the Gem who Jasper and Peridot work for."

"Okay, so who are the others?" asked Steven.

"Next there's Blue Diamond." said Pearl. "Most of what I know about Blue Diamond is either information that I've read about him, or stories that I've heard from other Gems who've encountered him. Blue Diamond is known throughout the Gem Empire as a powerful warlord, and he's the Gem that's in command of the bulk of the Gem Empire's military forces. Some of the strongest and most powerful Gems are under his command, and he's also said to be very strong himself. He also possesses a very potent ability to control any and all types of water with incredible ease."

"That's kind of like what Lapis does." said Steven. "So Lapis isn't the only one who can control water?"

"Yes Steven, she's not the only one." said Pearl. "There exist Gems who are able to control certain elements to their whim and use those element in battle, sometimes even taking the place of their weapon. For instance, Ruby has control over the element of fire, and Sapphire has control over the element of ice."

"What about the last Diamond?" asked Steven.

"Finally, there's White Diamond" said Pearl. "She is the leader of the council of Diamonds, and is also the supreme ruler of the entire Gem Empire."

"Wow, she must be powerful." said Steven.

"To tell you the truth, I don't really know much about her." said Pearl. "None of us really do. She's an enigma; a complete mystery, and so are all the Gems who serve her. We're not even really sure what she looks like. Descriptions of her appearance are always vague, and they never seem to match up with each other. Sometimes she has been described as being a Gem of pure white, and other times she has been described as being a Gem of pitch black, and with each of these appearances, her personality is also said to be vastly different as well. However, I have a feeling that she is a very dangerous Gem that we should definitely steer clear of."

"Hopefully she stays as far away as possible from here and we never encounter her." said Garnet. "The less we hear of her presence, the better."

"Wait, so my mom used to be one of these Diamonds, right?" asked Steven. "So if that's the case, then does that mean that she used to be a bad Gem?"

Steven now seemed very worried upon asking this question, afraid of what the answer might be.

"It wasn't like that Steven." said Pearl. "Your mother wasn't really "bad" per say. She was just ignorant to what the Gem Empire was really doing, and because of that she had for a long time been blindly following along with whatever they were doing. Eventually, Rose and Onyx realized the truth and opened their eyes to what was really going on, and after coming to Earth they decided to change their ways. They then rebelled against Homeworld in order to save all of the inhabitants of this planet, and did so in the hopes of preventing the Gem Empire from ever exploiting and oppressing other races and worlds ever again. We rebelled, even though we knew that we could never go home again. We knew full well that we would most likely even have to fight against some of our own batch siblings who were on the side of Homeworld."

"That must have been terrible, having to fight your own siblings." said Jet. "It's like being caught between two very difficult choices, with neither one ending well for anyone involved."

"So, whatever happened to my mom's sister Onyx?" asked Steven, now changing back to the original topic.

"We don't really know." said Pearl. "She used to live with us here at the temple, and she even had a room in the underground portions, but that part of the temple has long since caved in. Often times she would just leave the temple and go off on her own, and do whatever she pleased. She was a very adventurous sort of Gem, and often liked to explore the world around her rather than just stay at the temple. Although she was the more mature and serious one compared to Rose, she was also the more eccentric one among the two, and maybe she was even a little odd."

"What do you mean?" asked Steven.

"She had a very unusual and uncharacteristic quality for a Gem." said Pearl. "If a Gem had ever displayed such a quality as hers back on Homeworld, they would have been considered defective."

"What was her special quality?" asked Jet.

"It was her love of and curiosity for all things here on Earth, especially humans." said Pearl. "She had an unnatural fondness and kindness for humans; a strange habit which eventually rubbed off on your Rose mother too."

"Is that how my mom turned out the way that she did?" asked Steven.

"Yes, that's part of the reason." said Pearl. "Before Rose had met Greg, she had simply considered humans to be weak, defenseless creatures in need of protecting, and even pitied them a little; never seeing them as being on the same level as her. Onyx on the other hand had always believed in them and actually saw them as equals. It was Onyx that started Rose on her path to changing her views on humans. However, this was one of Onyx's greatest weaknesses too. She was very naive when it came to humans, and cared about them almost to a fault. We always warned her that this could one day come back to bite her. When we had stopped hearing from her for a long time, we assumed that the worst had happened. We had no idea where she was or what had happened to her."

"That must be when she met my dad and married him." said Jet. "Then she brought me into the world."

"It's comforting to know that she was at least safe and happy that whole time, rather than in terrible danger in some unknown place." said Pearl.

The conversation between Steven, Jet, and the Crystal Gems continued on for a while as the Crystal Gems and Jet got to know each other better.

"So Pearl, what was it that you mentioned earlier about Jet's mom Onyx being an Onyx-class Gem?" asked Steven, rejoining the conversation with Jet. "What do you mean by "class"? Does that mean that there can be multiple Gems with the same name?"

"Of course it does Steven." said Pearl. "If there weren't, then we wouldn't even have to worry about Homeworld because there'd be so few of them to begin with."

"I suppose that makes sense." said Steven.

"A Gem class is the type or category a Gem falls into." said Pearl. "Their class designates what sort of role they are most suited for, and what types of abilities they will have. Homeworld Gems have a caste-based system, and within each of those castes, there are several Gems of different classes and types. For example, Onyx-class Gems have a fighting role, and they're pretty good at it too. They are known for being some of the most formidable warriors that the Gem Empire has to offer. Fusions can also fall into a class as well. For example, Sardonyx is also considered an Onyx-class Gem. Since Jet's mother Onyx was an Onyx-class Gem, that means Jet would be considered one too, since he now has her Gem. Usually, you can tell very easily what class or type a Gem is based on the color, shape, and size of their gem."

"That's interesting." said Steven. "So what kind of Gem class am I?"

"You, or Rose to be more precise, was a Quartz-class Gem." said Pearl. "Quartz-class Gems can also have a fighting role, and they are often known for their formidable defensive capabilities and innate toughness. Another example would be Amethyst, who is also considered a Quartz-class Gem."

"What about Peridot, or Lapis?" asked Steven, now even more interested. "What types of Gems are they?"

"Peridot is a Peridot-class Gem." said Pearl. "Peridots are somewhat common, and are also pretty low in the caste system, just like Pearls are, though slightly higher. While Peridots are not really meant for combat, they are very tech savvy and are also very skilled with machines. They are the Gems who are responsible for managing, operating, maintaining, and repairing all of the advanced technology of the Gem Empire."

"So what about Lapis?" asked Steven.

"As for Lapis, I have no idea what Gem-class she is." said Pearl. "I've never seen a Gem type like hers before. There's something special and unique about her. She seems to be very powerful, and I have a feeling that a long time ago, she might have been a high ranking Gem back on Homeworld."

"So, what type of Gem are you then?" asked Steven.

"Oh me?" said Pearl. "I'm just a regular, boring, Pearl-class Gem. There's nothing really amazing or spectacular about Pearls. Pearls are a mass-produced type of Gem, and they usually have the role of servants in Gem society. They have minimal fighting abilities of their own, and they're also used as grunt soldiers or cannon fodder by the Gem military forces. On the other hand, Quartz-type Gems like Jasper are often the generals or commanders of the Gem military forces who lead them into battle. Despite all this, Rose didn't see me in that way. Instead of seeing me as expendable like most other Gems would have, she saw me as a true equal."

"I still think you're amazing Pearl." said Steven.

"Thank you Steven." said Pearl, smiling.

"Here on Earth, there are no Gem classes or castes." said Garnet, joining into the conversation. "Here, we are free to be who we want to be, and do what we want, without being oppressed by the tyrannical ruling class of Homeworld."

"Hey Jet, I just realized something." said Steven, suddenly having a new thought.

"What is it Steven?" asked Jet.

"If my mom and your mom were sisters, then doesn't that basically make us cousins?"

"I never thought of it that way." said Jet, now seeming surprised. "Hmm, I guess it does."

"Welcome to the family then." said Steven, now sounding excited. "I don't have any siblings, so maybe this is what it feels like to have one?"

"I don't have any siblings either." said Jet. "I'm glad to be part of your family Steven."

Garnet, Amethyst, and Pearl were all surprised by this new revelation. They all then started to embrace Jet and welcome him, as if he were their kin.

"I'm so glad I got to meet you." said Pearl, who had tears in her eyes due getting very emotional. "You really are the child of Onyx."

"All of these Gems here, they're all treating me like family." Jet thought to himself. "I've never really experienced anything quite like this before. Throughout my whole life, it's just been me and my dad. He was always busy, so he couldn't really spend much time with me. I've always been alone, facing everything on my own, with no one to stand beside me. Is this what it means to have friends and family? All of these Gems, they all feel such an intense connection to this one boy Steven. It's this infectious charm that seems to gather people to him, both human and Gem. Maybe in time, I will come to know that same feeling and connection as well."

"So what now?" asked Jet. "Where do I go from here?"

"I have suggestion." said Garnet. "Jet, how would you like to join the Crystal Gems and become a part of us, like Steven has?"

"Join you guys?" asked Jet, surprised by the offer.

"We'd love to have you join us." said Garnet. "If you join, Steven will also have someone else who can watch his back and help keep him safe from danger."

Jet thought for a few moments, and then finally reached a decision.

"Okay then, I'll join you." said Jet.

"That's great Jet." said Steven. "I guess now this means your life won't be so boring and uneventful anymore. Now that you're part of the Crystal Gems, you'll be going on a lot of fun and exciting adventures."

"I'm looking forward to it." said Jet.

"You're just like Onyx." said Pearl, smiling. "That craving for adventure definitely comes from her."

"So Jet, if you're my family now, then that means I've got to introduce you to your uncle; my dad." said Steven. "Come on, I'll take you to see him."

Steven then started to walk out the door, and Jet followed behind him as Steven led him to where Greg was.


A few days later, Steven and Jet were hanging out on the hill with the lighthouse on top that overlooked the temple.

"You know Steven, I've been thinking." said Jet. "There's something I'd like to ask you before I fully accept being a part of this Crystal Gem thing."

"What is it?" asked Steven.

"What was it like growing up being a half-Gem all your life and people knowing about it?" asked Jet. "Did you ever feel as though people might have looked at you a little differently or treated you differently? Did you ever feel out of place, and like you just didn't belong because you were a half-Gem? Have you sometimes felt like you were caught between two worlds, neither human or a Gem, and you felt like nobody would understand you?"

"It was never like that at all for me." said Steven. "That's because the Crystal Gems and everyone else has always been there for me, supporting me. They always stood beside me, no matter what. The same goes for you Jet. I'll always be by your side and support you too, and so will the Crystal Gems. They'll accept you for who you are."

"That's the answer I was hoping for." said Jet, smiling. "We should just be ourselves from now on, and do what we want, regardless of what everyone else thinks of us. I'll always have your back too Steven. That's what friends are for after all."

"You'll stick by me too no matter what then?" asked Steven. "Through all the trouble that will come our way?"

"Oh course I will." said Jet. "We'll be an unstoppable team, just like how our moms Rose and Onyx were. I'll be the sword, and you'll be the shield, just like how it was for them. Nobody will be able to stop us on our path to glory."

Jet said that last line with a smirk, as he struck a heroic pose. It seems that his superhero alter ego had briefly come to the surface.

"But I thought Connie was already my sword." said Steven.

"She still is." said Jet. "This just means you have two swords now."

"Two swords?" said Steven.

"There are some things Connie can do that I can't do, and there are some things I can do that Connie can't do." said Jet. "You'll need both of our skills for all the battles we'll likely face in the future. Connie won't always be able to go with you on all your Gem missions, but I can because I'm a half-Gem like you. Remember, she's still only human after all. She isn't as durable as a Gem or half-Gem like we are."

In his hands, Jet was holding some some sort of black cloak, and he seemed to be stitching something to it.

"Alright then, we'll be battle buddies." said Steven.

"Not only that." said Jet. "We'll be sworn brothers of the sword, just like in those stories Connie would tell you about where two warriors would swear brotherhood to each other. We're already sort of brothers aren't we?"

"Yeah, I guess we are... brother." said Steven, smiling and playfully punching Jet in the shoulder.

Jet then finished with the cloak he was working on and finally put it on, as if it were the cape of some superhero.

"Steven, from this day on, we'll brothers." said Jet. "In my normal, everyday life, I'm Jet Nova, but in my life as a Crystal Gem, my new superhero alter ego will be called... Jet Universe."

Jet was standing at the edge of the cliff and looking off into the sunset. On the back of Jet's cloak was the design of a yellow star, just like the one on Steven's shirts.


Fun fact: Jet and Jean's last names are both Nova, which has a space theme to it, just like Universe, the last names of Steven and Greg. Also, Jet's middle name is his mother's name Onyx, making his full name Jet Onyx Nova.