I give you the first ever Attack on titan/Superman crossover. You're welcome.
Krypton was a planet far away from our little blue dot. Inhabited by a race much like our own, but far more technologically advanced. The planet was much more hostile; thinner atmosphere that would be considered poisonous to us, much more gravity, and less water to go around. But still this civilization thrived.
A scientist by the name Jor-El was an important figure on krypton. He was head of the science department on Vathlo Island. He was also in charge of keeping relations with the rest of Krypton, as Vathlo Island was the only nation independent from the Kryptonian union. Because of this independence, the Kryptonians on that island developed into an entirely different race. Having darker skin color. Despite this, Vathlo Island had a good relationship with the Kryptonian union; interracial marriage was starting to become a thing. But these progresses were going to abruptly end, as the findings from the scientist Jor-El told a grim story.
Jor-El stood in the center of a council, confronting those who ruled Krypton. He reported his findings and demanded immediate action.
"You don't understand, Krypton's core is collapsing; we may only have a matter of weeks" Jor-El explained, "I warned you, harvesting the core was suicide, it has accelerated the process of implosion"
"Our energy reserves were exhausted; what would you have us do El?" one councilman retorted.
"Look to the stars! Like our ancestors did" Jor-El quickly responded, "there are habitable worlds within reach; we can begin by using the old outposts"
"Are you seriously suggesting we evacuate the entire planet" a councilwoman spoke up.
"No; everybody here is already dead" Jor-El said grimly, "give me control of the codex, I will ensure the survival of our species. There is still hope, I have held that hope in my hands"
Just then, an explosion came from down the hall. A bunch of soldiers came out of the smoke to reveal a figure. General Zod.
"This council has been disbanded" Zod said authoritatively.
"On whose authority?" the councilwoman demanded
"Mine" Zod replied before shooting said councilwoman, "The rest of you will be tried and punished accordingly"
"What are you doing Zod? This is madness!" Jor-El shouted.
"What I should have done years ago; these lawmakers with their endless debates have led Krypton to ruin" proclaimed Zod as his soldiers rounded up the council members.
"And if your forces prevail, you'll be the leader of nothing!" Jor-El said bravely
"Then join me, help me save our species" Zod offered, "to start anew, to severe the degenerative bloodlines that led us to this state; even to join our two races into one master race"
"And who will decide which bloodlines survive Zod?" Jor-El asked, "You?"
Zod gave Jor a stern look before saying, "don't do this El; the last thing I want is for us to be enemies".
"You have forgotten the principles that bound us together" Jor-El replied hoarsely, "You've taken up the sword against your own people; I honor the man you once were Zod, not this monster you've become"
Zod had a slightly hurt look on his face before he turned around and said, "Take him away". As the soldiers took him away, a drone hovered in front of him.
"Sir, is everything alright?" the drone asked
"Out of the way!" one of the soldiers demanded
Jor-El nodded before a blinding light emitted from the drone blinding the soldiers who detained Jor-El. Jor head-butted the soldier on his left before he grabbed the right one's gun and turned him around to punch him in the back. The soldier turned back around to shoot him but Jor-El grabbed the gun again and turned it upward. Jor spun around to get into the right position to shoot the grounded soldier that he head-butted. After he was done, another soldier ran up to him and punched him in the face. Jor-El responded by kicking him in the knee, putting him on the ground. Jor then elbowed the man he was holding onto and used his gun to shoot the grounded man. Jor continued by wrenching the gun out of the soldier's hand and smacking him with it, knocking him out. After he was done, he spoke to the drone.
"Get me Lara" said Jor-El.
Lara appeared on the screen to speak to him, but she noticed some soldiers behind him and warned him about them. Jor shot both of them before he turned back to the screen.
"Lara, you have to ready the launch, I'll be with you as soon as I can" Jor-El explained before he ran outside.
He saw a raging battle in front of him, but he had a job to do.
"HARAKAH!" Jor-El shouted
Then, a large four winged dragon like creature came flying towards him. It landed right next to him before Jor-El got onto him. The dragon creature jumped off the ledge a dived down to the giant gill-like structures below with the drone following. The creature flew through the megastructure, dodging the fire that whizzed past them.
Jor-El got above a large rock-like structure with pools of water jutting out from it. He lowered down onto it.
"Do you see the central codex?" Jor-El asked the drone
"It's just beneath the central hub sir, but I'm compelled to warn you; breaching the genesis chamber is a class B crime punishable b-" the drone was cut off by Jor-El saying: "nobody cares akeel x, the world is about to come to an end". With that said, Jor-El dived into the pool of the genesis chamber. He swam though the large chamber where unborn babies were artificially grown. they were grown on vines in these transclearant pods. the chamber was peacful in a way. the peace came to an end when Jor-El pushed up to the surface of the chamber. He looked up to see tentacle-like structured taking genetic information from a skull. Jor-El reached up and grabbed the skull. But when he did, a beeping sound was heard that would alert the already scattered authorities. With the sound, Jor-El dived back down to escape.
He emerged from the pool with the codex in hand. He heard a whirring sound and turned around to see a fighter aircraft aiming at him.
"Jor-El, by the authority of general Zod, surrender the codex" the pilot ordered.
Jor-El jumped off the ledge as the aircraft shot at him. As he was falling towards another gill-like structure bellow him, his dragon creature caught him and carried him off. The aircraft followed closely behind. The Harakah (the dragon creature) tried it's best to dodge the incoming fire. It started to pay off when they came to the end of the gill-like structure; but there was a crashing ship blocking the way!
Jor-El was going to try a risky maneuver, one that might lose the perusing aircraft. Harakah dived through the crashing ship. One of the aircraft crashed into burning ship while the other moved out of the way.
It was a complete inferno as Jor and Harakah narrowly escaped the explosion that was caused by the massive ship. Jor-El noticed that Harakah was injured; he had to get to his aircraft fast! It would carry them back to Vathlo Island where the launch was being prepared.
"Easy Harakah" Jor-El said in a soft voice.
Harakah barely landed next to the aircraft. But time was being wasted. Jor-El loaded Harakah and the drone into the craft and took off. He went at full speed. The flight had Jor-El very tedious as even at full speed, the flight would take at least 20 minutes.
The craft managed to make it to the launch pad at the El residence. It made a soft crash landing as the craft ran out of fuel. Jor-El quickly got out and came to the room where Lara and his son: Kal-El was. Jor-El put the codex into similar tentacle-like structures. The codex was ingrained into the infant.
"Find a world?" Jor-El asked his wife
"We have" Lara replied.
"Orbiting a main sequence yellow star just as you said it would" the drone added
"A yellow star; his cells will drink up the radiation" Jor-El observed, "seemingly intelligent population".
"He'll be an outcast, a freak; they'll kill him" Lara said with worry.
"No" Jor-El said sternly, "he'll be a god to them"
"The planet seems to also have giant inhabitants" the drone continued, "they seem to all be concentrated on a subcontinent".
Lara gave Jor-El a skeptical look.
"Are the giant inhabitants hostile?" Lara asked the drone
"We currently have no info on that, though probes have spotted massive wall structures on the subcontinent, perhaps to repel the larger species, but doing so has left them trapped"
That could only mean one thing; that the giant creatures were hostile.
"Jor, please don't tell me he is heading there" said Lara with concern
"We cannot know for curtain if he'll land on the island specifically, but on that planet, he'll have abilities beyond that of Kryptonians, maybe even enough to surpass the power of the new Gods" Jor-El said wearily, "he will be the representation of a long dead races".
"What if the ship doesn't make it" Lara said, "he'll die out there, alone. I thought I could do it, but I can't"
She looked down at her child. His dark brown eyes met hers. His smile carried all the innocence of the world.
"Lara, krypton is dead, it's his only chance now" Jor-El explained, "this will be the last thing we do that matters".
"I'll upload the codex" said Jor-El.
"No wait, let me look at him" said Lara as she looked down at him, "We'll never get to see him walk, or to hear him say our names".
"Out there, amongst the stars, he'll live" Jor-El said softly.
Both kissed him before Jor-El took the infant Kal-El and put him into the pod. Kal-El let out a cry. The information of the codex was transferred to him and more information was transferred to a crystal with an 'S' shaped symbol on it.
"Goodbye my son" Jor-El said with sadness, "may our hopes and dreams travel with you".
With heavy hearts, they loaded the pod and sent him off the world. Both had wetness in their eyes. Both went off to the deck that overlooked the land on Vathlo Island. They sat down and enjoyed the last sunset on Krypton.
"Remember all those years ago" Jor-El said sadly.
"When we were first married?" Lara replied
"And they said that 'may only death separate us" Jor continued.
"I'm glad we can spend our final moments together" Lara said almost about to cry.
"He will be our legacy" Jor said almost about to cry himself.
A tremor was felt before the whole island seemed to start sinking into the sea. Jor and Lara joined each other in a lover's embrace before the island sunk into the sea. After that, the entire planet collapsed in on itself.
The infant Kal-El was jetting safely towards its destination at incredible speeds. He was Krypton's last survivor.
Worlds away
There was a wagon traveling through open fields at night. Driving the horse drawn wagon was a young doctor by the name of Grisha Jaeger. He had with him a woman named Carla Jaeger, his wife. The woman was carrying a baby, a year and a half old. They called the baby Eren Jaeger. Carla looked up at the starry sky and appreciated their beauty. She then turned to her husband.
"Grisha, why are we going to Shiganshina? That district is the most likely to be attacked by titans" Carla questioned.
"Carla, that wall has stood strong for over a hundred years, and besides, that city is in dire need of a doctor" Grisha answered.
"I know; but I think it would be better to raise Eren in the countryside" Carla said.
"Yes, but a farmer would never make as much money as a doctor" Grisha retorted.
Carla pondered at that statement before again looking to the stars. She saw that one of them was moving.
"Grisha, look, it's a shooting star; want to make a wish?" Carla said with excitement
"Carla, do you really believe in such things?" Grisha questioned, "and besides, I already got my wish"
"Oh really, and what is it?" Carla asked
"A job as a doctor of course" Grisha said.
Carla pouted before getting a struck of inspiration. She looked down at her son and told Grisha her own wish.
"Well you know what I wish for?" Carla said
"What?" Grisha asked.
"Another child" Carla said.
"But you know how much work that's going to be?" said Grisha, "and besides, those shooting star things don't work"
Just as if on que, the 'shooting star started to move towards the small family.
"Um, Grisha, I think that shooting star is heading towards us" Carla said in fright.
Grisha noticed too and made the horses go faster. The 'shooting star' shot above them and landed in a field right next to the road. The crashing sound was loud enough to make the young Eren start crying. Grisha stopped the cart and got off the wagon. Carla too got off the wagon with the still crying Eren and they made their way towards the object.
When they made their way to the fallen object, they expected one of those falling rocks that sometimes happen. What they saw instead completely blew them away. It looked like some sort of craft. Grisha started to move closely to it.
"Grisha, what are you doing?" Carla whispered loudly.
"Inspecting it" Grisha answered.
Before Grisha could touch it, the craft hissed and began to open. Inside was a baby. Both Grisha and Carla stood in awe. Even Eren seemed to shut up. Carla handed Grisha Eren and instinctively went for the baby. She picked him up and held him like he was her own. He looked quite similar to a normal baby, but his skin was much darker than anybody's; even those with a really good tan.
The baby smiled and lifted his stubby arms to try and grab the Carla. Carla smiled and kissed the baby.
"What should we name him?" Carla asked
"What? Are you suggesting that we adopt him?" Grisha hissed, "He just fell out of the sky, I don't think anybody's ready for this"
"And that's why we should keep him" Carla proclaimed, "he was sent here for a reason, and we were chosen for it; what do you want to do? Leave him for dead?"
Grisha sighed and said, "Fine, but we need to keep his origin a secret". Grisha then looked at the craft.
"We need to find a way to transport this" Grisha said before handing Carla Eren.
When Grisha touched the craft it started to float in the air, surprising both of them.
"Well that'll make things easier" Grisha commented.
He started to pull the craft towards the wagon. The craft seemed almost weightless. Carla then looked down at her two sons and smiled.
"Say hello to your new brother Eren" Carla said in a soft voice.
"Bubby!" Eren babbled.
Carla nearly squealed from hearing that. She turned to Grisha who was tying the craft to the wagon and putting a tarp over it.
"Did you hear that Grisha? Eren said his first word!" Carla exclaimed
Grisha gave a soft smile and got onto the wagon.
"Come now, we have a long ways to go" said Grisha.
Carla got onto the wagon and looked down to her new son.
"What should we name him?" she asked
"I don't know; maybe Sasuke" suggested Grisha, "I heard it was popular among those easterners; even though I think they're extinct now"
"He doesn't look much like an easterner though" Carla said.
"Yeah; let me think of another one" said Grisha.
"Oh! How about Friedrich; it sounds classy" Carla suggested.
"Friedrich Jaeger" Grisha said to himself, "You know what, I like that"
"I guess it's settled; his name shall be Friedrich Jaeger" Carla said.
The family continued traveling through the night. Little did they know, both babies would one day play a pivotal role in humanity's salvation.
So, what did you guys think? Not bad eh? I decided to use the black superman because everybody else is white (well, except for Mikasa) it would be hard not to. Oh and yes, supe's name is a shout out to Friedrich Nietzsche, the one who came up with the idea for the Ubermensch. And most everybody in Attack on titan are German, so it all falls into place.