Chapter 1: An Electrifying Welcome

It has been a long journey since Yugi and his friends saw the end of Orichalcos and saved the world from its destruction. Now they are on their way back home to Domino City; ready to leave their past journey behind them.

Inside Kaiba's Helicopter

"Finally! We can put that crazy journey behind us and relax!" said Joey as he leaned back and kicked his feet up on a leg rest. "You said it." Tristan replied. "I'm just glad now things can go back to normal." Téa replied. "Hey Yug, are ya going to prepare for Kaiba's tournament?" Joey asked as he turned to him. Yugi looked out the window silently; not even knowing that Joey was talking to him. Joey, Tristan, Duke, and Téa stared at him for a few moments and began thinking something wasn't right with him. "Hello! Earth to Yug!" Joey slightly yelled to him; making him jump out of his seat nervously. "H-huh? Joey… why did you have to do that?" Yugi asked him. "'Cause you didn't answer my question." he replied.

Yugi blinked his eyes curiously and then sat back down on his seat; looking down at his Millennium Puzzle. "Are you feeling alright?" Téa asked him. "Yeah, I'm fine. I'm just thinking about how Grandpa is doing." he replied. "I'm sure that he is doing fine, Yugi. Knowing him; he would want you to come home safe and help him run the Game Shop." she said as he looked at her. He lightly smiled at her happily and then turned to Joey and Tristan. "So Joey, what were you trying to ask Yugi?" Téa asked him. "Oh right! What I was trying to ask you is: are you preparing for Kaiba's tournament?" he said. "I am, but I don't really know who will face against me in the end?" Yugi replied. "If it's gonna be me, I'm gonna give you and the Pharaoh the best duel the world has eva seen!" Joey answered happily; making Yugi lightly laugh happily. "Please Wheeler, everyone in this world knows that I will be the one to face the King of Games himself." said Seto as he walked upto the group with his little brother, Mokuba. "Hold on a second, rich boy... didn't you say that you're not competing in this tournament?" Joey asked him. "I did, but that doesn't mean that I can prepare for my next duel with Yugi soon." Seto replied.

Joey and Seto stared at each other angrily; making everyone else feel uncomfortable, and Mokuba decided to sit next to Yugi as his brother and Joey argue with each other. "Do you guys think their rivalry will ever end?" Mokuba asked them. "I don't think so, as long as they don't get Yugi involved; it will go on forever." Téa replied. Tristan and Duke turned to the window behind them and saw the view of Domino City below them. "Check it out guys, we're almost home." said Duke. Everyone turned to their window and saw the view of the City. "Wow... it looks so beautiful from up here." said Téa in awe. "And soon we'll be back home." Tristan replied. As they looked out, the pilots of the helicopter noticed something shining bright in the sky. "What is that?" said one of the pilots. "It looks like a very bright star." said the other pilot. They stared at it silently and then saw a bright white light spread throughout the sky and the City below! "What the!?" both pilots said in shock.

The group heard the pilots and began to wonder what was wrong. Mokuba looked out the window and saw the same bright light that the pilots saw; staring at it in shock. "Guys! You have to see this!" said Mokuba in shock. The group looked out the window and saw the bright light for the first time. "What is that!?" said Joey. "What's happening to the City!?" said Tristan. Before anyone said a word, the bright light reached them and brought them into it, and everyone began to wonder what had happened to their homes.

Domino City Park- Daytime

"Yugi? Yugi, wake up." said a voice. Yugi opened his eyes and saw his friends looking down at him; making him breathe a sigh of relief to see his friends are safe. Joey reached his hand to him, and he grabbed it; standing back up on his feet. "Everyone okay?" Mokuba asked. "Yeah, we're okay. Where are we?" Yugi asked. "Domino City Park." said Seto. The group looked around the area and saw no one in sight. "That's weird..? Usually there's alot of people here on a nice day like this..." said Duke. "Maybe they're hiding inside of their houses after seeing that light." Joey replied. "Speaking of that light, where did it come from?"
Téa asked them. "Maybe it came from outer space?" Tristan answered. "No way it could've! That's impossible!" Duke replied. "Hate to say, but I agree with Duke on this one." Joey added. As the three teenagers argued. Yugi looked at the Millennium Puzzle and saw it glowing! "What the!?" said Yugi in shock; making the group turn to him. The Puzzle glew brightly and began separating Yugi and the spirit inside the Puzzle. It stopped a minute later, and Yugi saw his friend standing next to him for the first time in person! "Pharaoh!" said Yugi.

The Pharaoh blinked his eyes and then turned to Yugi; seeing him nearly speechless. "Yugi? What's with the look on your face?" he said curiously. Yugi walked upto him and pinched his right hand; making the Pharaoh surprised and held his hand. "That actually hurts... why did you do that?" he asked. After that, he began to realize why Yugi pinched him. He blinked his eyes and looked at everyone in front of him, then back to Yugi. "Yugi? Am I... alive?" he asked him. "Well if you really felt pain from the pinch, then yeah... you're alive." said Yugi. The Pharaoh blinked his eyes and smiled happily at his friend. The rest of their friends walked upto the Pharaoh and talked and hugged him; happy to see him; except for Seto. Mokuba stared at the Pharaoh and noticed that he looks alot similar to Yugi. The group noticed Mokuba's curiosity and walked upto him. "Mokuba, this might be a little hard to explain; but this guy here is..." said Yugi. "Pharaoh, that is his name right?" said Mokuba. Yugi and the Pharaoh turned to each other curiously and then back to Mokuba. "Maybe it's easier for him to go by a different name, eh Yug?" Joey asked him.

"You okay with that?" Yugi asked his friend. "Sure, you all can call me Yami." said Yami. "Yami..? That does sound better than calling you Pharaoh." Mokuba replied with a smile. Yugi and Yami lightly smiled at Mokuba and then turned to Seto; seeing him staring down at Yami. Yami walked upto him and stared him down as well; making the group feel a little insecure towards their actions. "Kaiba." said Yami sternly. "So, you're the one who's been helping Yugi in Dueling?" said Seto. Yami crossed his arms silently and then turned to Yugi. "I only help him to protect him from danger." Yami replied sternly. "And you think I'm a threat to him? Have you ever seen me throw a fist at him?" Seto asked. Yami looked at Yugi and Téa; seeing them trying to tell him to stop. "You know what, I'm done with this talk Kaiba." Yami replied; making the group breathe a sigh of relief. "Thank goodness." said Yugi. "I'm sorry for my actions, Aibou." said Yami as he walked upto Yugi. "It's alright, Yami. I'm just happy that you didn't threaten Seto with a Shadow Game." Yugi replied. Yami nodded his head in agreement and then Seto walked upto the rest of the group.

They looked around from where they stood and began to wonder what that bright light did to the world, and then Mokuba looked down and saw something glowing on Yugi, Yami, Seto, and Joey's hips! "Uh guys... your Cards are glowing!" he said to them. The four heroes looked down at their hips and saw their Card Boxes glowing; making them nearly speechless. "What the heck is going on!?" said Joey in shock. After he said that, five white beams appeared and then five monsters came out of the beams. "Those monsters... did they just come out of the cards themselves?" said Duke. "What kind of magic is this?" Tristan added. The five monsters looked at each other for a moment and then turned to the four heroes they knew. "Dark Magician, Dark Magician Girl, Kuriboh, Blue-Eyes White Dragon, and Red-Eyes Black Dragon! Those are the best Duel Monsters in their decks!" said Téa as they stared at the Monsters. The five Monsters stared at their masters for a moment and then watched both Yugi and Yami slowly approach them. "Nice to see you two again." said Dark Magician Girl. "Nice to see you again too, Dark Magician Girl." Yugi replied. "We know that you and your friends are thinking how we got here." said Dark Magician. "You all came from your Spirit World, right?" Yugi asked. They nodded their heads yes to his question. "Is your world in danger?" Yami asked them. "It is not. Apparently that light you all witnessed last night has brought us Duel Monsters to life." Dark Magician answered.

"But did you see something that brought you all to life?" Yugi asked. "I saw something." said Kuriboh. Yugi and Yami knelt down to him and saw him slightly approach them. "What did you see, Kuriboh?" said Yami. "I saw a monster... a monster from another world. It had incredible power that was stronger than Gods." said Kuriboh. The heroes stared at him in shock after hearing what he had said. "What does he mean by stronger than Gods?" Joey asked. "It means that this monster is stronger than the three Egyptian Gods themselves." said Red-Eyes Black Dragon. "What!?" said Joey and Tristan. "A monster stronger than the three Egyptian God cards... that seems like a worthy one to add to my Deck." said Seto. "But Master, this monster is from another world that cannot be caught. It's power is way too strong for us to fight against." said Blue-Eyes White Dragon. Seto looked at his monster in shock and began to take its words to heart. "But we don't know if this monster is good or evil, right?" said Dark Magician Girl. "Right. All we need to do is find the monster Kuriboh saw and see if it's truly evil or not." Dark Magician replied.

As everyone began thinking of a plan, Kuriboh sensed something in the distance and turned to a path; leading to a forest. He blinked his eyes and began going towards the path on his own. Dark Magician Girl turned to him and saw him going to the path. "Is something wrong, my apprentice?" Dark Magician. "I think we all should follow Kuriboh... I think he saw something?" Dark Magician Girl replied. "Alright then, let's go." said Yami. Everyone then started to follow Kuriboh and began to wonder what he saw.

Middle of the Forest

Kuriboh kept flying on the path for another minute and then heard voices in the distance. He floated back down to the ground and hid behind a tree; peeking out and saw two kids and two Duel Monsters walk up; recognizing them. "So Weevil, this is where you said our monsters sensed something?" said the first kid. "Indeed, Rex. Insect Queen and Two-Headed King Rex told us that they sensed an incredible power here. Now, they just have to find it for us and we can capture it!" said Weevil. "Cool! But, where is it?" Rex asked. "I don't know, that's why they're searching for us!" Weevil replied. Kuriboh looked up and saw Insect Queen begin climbing up the tree he was hiding behind and Two-Headed King Rex flying around the area. Kuriboh began shaking nervously and then saw Insect Queen's eyes looking down at him; making him shriek. He flew away from her and then got down on the field; seeing both Rex and Weevil looking at him. Insect Queen and Two-Headed King Rex landed onto the field as well; smirking at him with glee. "A Kuriboh? What's it doing here?" said Weevil. "Wait a second... isn't that Yugi's Kuriboh?" Rex asked.

Kuriboh's eyes widened in shock; knowing now his identity is revealed. "Oh yeah... it is Yugi's Kuriboh! That means Yugi is hiding the powerful monster from us!" Weevil replied. They both smiled wickedly and saw their monsters turn to them. "Insect Queen. Two-Headed King Rex. Do your worst!" they said. "With pleasure." Insect Queen replied. "This is going to be fun." Two-Headed King Rex replied. Kuriboh slowly began to back away in fear as they came close to him. As it was happening, Yugi and his team caught upto him and saw what was happening; staying behind the trees and bushes. "It's Rex and Weevil! What are those two doing here?" said Tristan. "Going for the same thing we're going for." Duke replied. "We've got to help him!" said Téa worriedly. Before Yugi and Yami tried to jump in, Dark Magician stopped them with his staff. "What are you doing!? We need to-" Yugi whispered. "Stay low, something's coming." said Dark Magician. "From where?" Yami whispered. "I'm not sure, but I can sense its power." Dark Magician replied. They knelt down and looked at Kuriboh as he stopped at the tree and covered his eyes.

As Kuriboh was about to be attacked, a green lightning bolt hit both Insect Queen and Two-Headed King Rex; shocking them and pushing them back from him. Kuriboh uncovered his eyes and saw his foes were pushed back from him; leaving him curious. "What was that?" said Mokuba. "Whatever it was, it did a good job of protecting Kuriboh." said Duke. Kuriboh took a couple steps forward and saw his two foes stand back up and began looking around. "Okay... to the creature who zapped us, show yourself! I would love to slash you down to the dirt, you punk!" said Two-Headed King Rex. A couple seconds had passed and another green lightning bolt crashed onto the grass right in front of Kuriboh. It disappeared and the monster was revealed. It was rodent looking, covered in yellow fur with two green horizontal spike pointed stripes on its back, long pointed ears with spiked black tips and a piercing in its left ear, a lightning bolt shaped tail with black spiked fur on top and green fur on the bottom, green eyes, red circles on its cheeks, black/yellow spiky hair on its head and chest, and two scars on its left eye and from its left shoulder to its right leg. Kuriboh looked at the monster and saw it turn its head to him. "You alright?" the monster asked him. "Y-yeah, I'm alright. Thanks. And you are?" Kuriboh replied. "Tetrax." said Tetrax. "Tetrax? Cool name. My name's Kuriboh, nice to meet you." Kuriboh replied. "Thanks. Nice to meet you too, Kuriboh." Tetrax replied. Kuriboh nodded his head as he sat down and Tetrax turned to the two foes; glaring at them angrily.

"A rodent? Pathetic... you're nothing more than dinner to me." said Insect Queen. "I've heard that one over a hundred times. Try to come up with something new." Tetrax replied. "Enough talk, let's fight!" said Two-Headed King Rex as he began charging at Tetrax. "Even better." Tetrax replied as he ran into battle as well. The two monsters collided into each other and Two-Headed King Rex tried to bite his opponent. Tetrax dodged with ease and jumped onto one of his foes heads and zapped his horn; making him fall to the ground. He leapt off and saw Insect Queen launching herself to him and trapped him in a webbed cocoon. "Tetrax!" Kuriboh yelled. Tetrax struggled with the web for a moment and then broke out of it as Insect Queen came close. "Take this! Queen's Toxic Breath!" said Insect Queen as she used her attack. Tetrax got out of the way in time and then leapt up in the air, curled up like a ball, made his tail glow white, and surrounded himself in electricity. "Volt Steel Strike!" Tetrax yelled as he used his attack on his foe; striking her in the back and made her crash down to the ground. "Insect Queen!" Weevil yelled. "Man, that little guy is really strong!" said Joey.

Yugi and Yami watched Tetrax fight with ease and began to wonder if he was the monster with the power stronger than Gods, and then turned to Kuriboh; seeing him stare at Tetrax as he fought. Rex and Weevil ran upto their monsters and helped them stand back up, and then turned to Tetrax; seeing his eyes begin to glow. "So, you two are the ones controlling those Monsters to hurt this innocent Monster?" said Tetrax. "Yeah, so what? They do whatever we ask them too!" said Rex. Tetrax growled at the four foes angrily and then made a tiny yellow crystal appear; floating above the palm of his paw. "Humans like you make me sick. Taking away these monsters free will and using them for your own personal game. It is the main reason why humans are banished from my world." said Tetrax angrily. Everyone was shocked to hear what he had said; some even taking his words to heart. Tetrax grabbed the yellow crystal in his paw and absorbed its energy. He made a large ball of green electricity appear in front of him and stared down his foes. "What is he doing!?" said Téa. "Gigavolt Havoc!" said Tetrax as he punched the ball of electricity towards his foes; launching them to the sky. "Looks like we're blasting off again!" Rex and Weevil screamed. After that, they were gone.

Tetrax turned back to Kuriboh and walked over to him; extending his paw to him. "You're safe now." said Tetrax with a light smile. Kuriboh took his paw and stood back up on his feet and then the two monsters heard the bushes rustle a little bit. Tetrax stood in front of Kuriboh; ready to defend him, and then saw Yugi, Yami, and the rest of the group walk out of the bushes and stare at them. Kuriboh walked over to Yugi and Yami and jumped into Yugi's arms; giving him a hug. "Thank goodness that you're safe." said Yugi to him. Their hug ended and Kuriboh turned to his new friend; seeing him look at everyone curiously. "I guess you've never seen a human care for a monster like that before?" Kuriboh asked him. Tetrax lowered his guard and nodded his head yes to his question. "There's no need to be afraid of these humans, they're all good ones that take care of us." said Dark Magician Girl. Tetrax blinked his eyes and lightly smiled at her. "He understood what she said?" Joey whispered. "Of course I did." Tetrax replied. "Ah! I forgot he can talk!" said Joey surprised. "But can he read minds?" Tristan asked. "Will you two stop it?" said Téa. Yugi and Yami lightly shook their heads and then turned to Tetrax; seeing him looking at them. "I know what you're about to ask me. First, for saving Kuriboh: you're welcome. Second: you want to know how can a little creature like me can have the power to surpass Gods, right?" said Tetrax.

Yugi and Yami stared at him shock; knowing that was the one question they wanted to ask him. "See, I told you he can read minds!" said Tristan. Both Red Eyes and Blue Eyes rolled their eyes and shook their heads to Tristan's response. Yugi, Yami, Kuriboh, and Tetrax stared at Tristan all confused for a moment and then turned back to each other. "So that means... you're the one Kuriboh saw in his vision." said Yami. Tetrax nodded his head yes to his question. "What world did you come from?" Yugi asked him. "I come from a world of powerful monsters. Monsters that have no limits of their strength and powers beyond your imagination." Tetrax replied. "And you're the strongest of them all... how did you get all this strength?" Kuriboh asked. "I earned this strength from my bloodline. The Elementus bloodline has been protectors of my world for many generations. And also chosen to protect a Legendary artifact that keeps my world going." Tetrax replied. "So, are you some kind royal guard or something?" Kuriboh asked again. "Something like that. I am a Prince." Tetrax replied. "You're a Prince!?" said Kuriboh, Yugi, and Yami in shock. Tetrax nodded his head yes to their response. "I am Tetrax Leon Elementus. Prince of the Elemental Kingdom, and ally to "The Original One"." said Tetrax.

Thank you so much for reading Chapter 1 of Yu-Gi-Oh and Pokémon: Monsters Unite! This is the biggest crossover story that I have dreaming of to do for a very long time because of my childhood of loving these two franchises. I've always been a fan of Pokémon and Yu-Gi-Oh as a kid because of the characters and the monsters at their sides; making me love the collectable monster genre in both manga and anime. These franchises have helped through the darkest times of my life and always made me smile everytime I watched them on TV. And I always imagined what would happen if these worlds crossed over; especially with a Pokémon world that has no humans.

And I'm so happy that I brought Tetrax into the story! He is my very first OC way back 4 years ago and is one of my favorite characters that I loved to write. I've always wanted to find a way to bring him back and now to see him become a powerful ally to our Duelists, I think he's going to have the greatest adventure of his life. Anyways, thank you so much for reading and have an awesome day!

Next time, Chapter 2: The Elemental Prince. Tetrax tells the Duelist about his world's origins and how their worlds have come together. As they return to the City, a rogue Salamence appears and goes berserk in the City. How will Salamence be stopped? Find out in Chapter 2!