Full Summary: After being abandoned by his father, Shinji Ikari is taken in by Gen Otori, aka Ultraman Leo. Before long, he is adopted into the Space Garrison, becomes an honorary Ultra Brother and is given an Ultra form. Taking on the name Ultraman EVA he begins his training with Leo to prepare for the coming battles ahead. As his 14th birthday comes around, he is called back by his father to Tokyo-3, to become an EVA pilot. Can Shinji keep his identity a secret, as well as to fight the Angels both as an Ultra and as the pilot of Evangelion Unit-01? Can he unravel the mysteries of NERV and stop his father's and SEELE's mad ambitions? And what will happen to Shinji when he finds himself falling for the mysterious Rei Ayanami?

Disclaimer and Author's comments: For starters, I do not own Ultraman or Neon Genesis Evangelion. I came up with this while watching DVD's of the original Ultraman and Ultraman Tiga and suddenly this crossover came into being. I did some research on the Ultra series for the Ultraman factor to be as best as possible. Ultraman EVA will have the body design of Ultraman Tiga's Power form and Ultraman Gaia's head design. This will be a Rei/Shinji fic, so if you have a problem with that: TOO BAD!!! I have made up my mind. So without further ado, let us begin the saga of Ultraman EVA……..SHUWATCH!!!!

Prologue: A Boy's New Destiny

On a highway, somewhere in Japan in 2004

A lone man was walking on the side of a highway somewhere in the Kanto region of Japan. He had the garb of a Buddhist monk on complete with a bamboo hat. His name is Gen Otori, as he is known in his human form. His real identity was Ultraman Leo, one of the only two survivors of the destroyed Planet L-77 and the 7th Ultra to come and protect Earth. He was taking his usual stroll down the highway as he usually has done, but something was eating away at his mind. About five years ago a disaster occurred in the south pole, called the Second Impact. A meteor crashed into the south pole and the ice of Antarctica melted at an extremely fast rate. About 2 billion people drowned in the oncoming tsunamis, and wars broke out soon after that. However one year after that, peace was restored, but the Earth and it's people were scarred for life.

However, Gen knew the meteor story was a cover up. He was there on that day. And he knew he could've prevented the devastation. That day, he was flying to reach Antarctica when he felt some sort of power being unleashed. In fact he wasn't alone. Along with him were Ultraman, Ultraman Jack, Ultraman Ace, and his old friend and mentor Ultraseven, flying towards the south pole. But as soon as they reached it, the explosion happened. Leo swore he saw some sort of giant of light in the blast. The fact they failed to prevent the disaster hit the five Ultras hard. Leo was depressed the most, he was closes to the point of the explosion, but the force of the blast stopped knocked him out. Gen hasn't felt this low since his planet was destroyed by the Magma. But, he couldn't dwell on the past forever, he had to move forward.

He soon found himself near the bus stop that was on his walking route. However, something was different today. A young boy, who looked like he was about three or four, was standing at the bus stop, along with a suitcase, crying. Gen became immediately concern and approached boy. "Excuse me, but why are you crying?" he asked, kneeling to be eye level to the boy. The boy looked at Gen with sadness in his eyes and spoke to him, choking out, "I-I-I w-was left h-h-here." "By who?" Gen asked. "MY DAD!!!" the boy wailed. Gen could not believe it. What kind of man would abandon his child? "What about your mother?" Gen asked. "SHE'S DEAD!" the boy cried. Gen was in a state of disbelief. 'His father left him and his mother dead? This boy has been through much.' Gen thought.

After some contemplating, Gen came to a decision. "Say, why don't stay with me for a while?" he asked. The boy looked up at Gen. His mother told him not to talk to strangers, but he saw kindness in Gen's eyes and a warm smile on his fierce looking face. However, the boy asked one question, "You won't leave me?" Gen looked surprised for a moment, but then smiled warmly at him and said sincerely "No, I will never leave you." The boy smiled as Gen brought his hand towards him. The boy took Gen's hand, and grabbing the boy's suitcase with his other hand, the two of them walked down the road towards Gen's residence. "What's your name?" Gen asked the boy. "Shinji, Shinji Ikari." The boy answered. "What is your name, mister?" Gen looked at the boy smiling and said "Gen Otori."

3 months later, Gen's home

"Hiya! Hiya! Hiya!" "Good Shinji, don't let up!" Shinji turn to his teacher/caretaker, bowed and said "Yes, sensei!" before continuing his kicking drills. Gen's home was just a simple secluded Japanese cottage, just big enough to house both him and Shinji. Gen was thinking back on the three months Shinji and him were together. He decided to teach the boy karate, as way to have him open up emotionally. He smiled thinking about that, but he scowled as he thought about his talk with Shinji's father, Gendo. About two days after he brought Shinji to his home, Gen called up Gendo concerning Shinji. However as soon as he mention Shinji's name, Gendo immediately dismissed him, saying Shinji was no longer his concern and promptly hung up. Gen tried to call back, but was blocked every time he tried to call. He even received a court order to stop calling Gendo. It was obvious that Shinji's father no longer cared for his son. It took every will in Gen's body not to transform and give Gendo a piece of his mind.

Suddenly a knock on his front door broke him from his train of thought. Shinji also heard this too, but Gen told him to continue his drills while he answered the door. When Gen opened door, he found himself face with a man a little older than his human form's physical age, and dressed like a cowboy. It was Dan Morobishi, the human form of Ultraseven. On Earth, Dan owned a stock farm near Kobe city, so that is why he was dressed as a cowboy. "Dan, what are you doing?" Gen asked. "We need to talk, Gen." Dan answered. "May I come in?" Gen gestured for Dan to enter. As Dan entered the house, he saw a tired looking Shinji enter from Gen's training area. "Oh! Hello, Dan." Shinji greeted a little fatigued. Dan smiled and said "Hello to you too, Shinji." Dan met Shinji two months ago, and after hearing the boy's story from Gen, Dan too started to be fond of the kid as well. "Shinji, why don't you clean yourself, and get some rest? Me and Dan have some things discuss." Gen said to Shinji. Shinji nodded and hurried off to clean himself off and to take a nap.

During the time Shinji was taking a nap, Gen and Dan were in the dining area discussing some stuff. Specifically, the Second Impact and the current situation on Earth. "Gen, my uncle, Ultra Father, has called a meeting on M-78 to discuss what has happen to Earth. He has called all the Ultra Brothers to return to M-78 to attend this meeting. It is mandatory. Ultraman, Jack, and Ace have already left Earth, and we need to leave either now or tomorrow." Dan explained. Gen looked a bit anxious. "How long will we be gone?' he asked. "A week tops. Look I know Shinji will be alright, if you leave him…"

"I CAN'T LEAVE HIM!!!" Gen interrupted. "His father won't take him back and as far as I know he has no other living relatives." Dan shook his head. "Gen, please understand, you know you're not allowed to take a human to M-78. No human that has not bonded with an Ultra been to the Land of Light."

"But, I made that promise I would not leave him that day." Gen said with anger and sadness in his voice. "Shinji has been through so much, like me….". Dan thought hard, and then put his hand on Gen's shoulder and smiled. "Well I guess we have no choice." He said. "We will have to show him our secrets. My uncle and aunt won't be happy about this, but it's the only way I can think of."

The next day

Gen and Dan took Shinji to an open field. Shinji was puzzled. "Sensei, why are we out here?" he asked. Gen looked at his young ward and said to him "Shinji…me and Dan have to go somewhere.." Shinji looked scared. Was Gen going to abandon him, just like his father? "but, you are coming along with us." Shinji suddenly felt relived. "However, me and Dan need to show you something."

Gen and Dan walked about three feet away from Shinji and turned to face him. Gen did a punch with his right hand while shouting "LEO!!!!", and the lion ring that Shinji always saw Gen wear glowed a brilliant light. At the same time, Dan brought out a pair of red glasses and placed them on his face and Dan was surrounded by a similar light. Shinji shielded his eyes, until it died down. Then two quakes happen and he fell on his bottom. He looked up to see two red and silver giants looming over him. Shinji was frightened beyond reason.

Suddenly the giant with "Leo" kanji on it's body kneeled towards him. Shinji started back away until he heard a familiar voice coming from the giant. "Shinji, it's all right.." Shinji looked at the giant and said "Sensei?...is that you?" The giant nodded and said "Yes. This is me in my true form, Ultraman Leo," and he then gestured to the other giant, "and that is Dan's true form, Ultraseven." Shinji looked at the other giant, and the giant nodded. "We have to go to the Planet M-78 for a meeting, me and Seven have decided to take you along with us." Leo explained to Shinji, "Are you up for the trip?"

Shinji nodded.

Leo brought his giant hand out in front of Shinji. Shinji then got on the hand and suddenly a force field surrounded Shinji. "Don't worry," Leo reassured him, "This is to protect you in space." As soon as Leo was standing at his full height, he and Seven took off. Shinji looked amazed as he was flying through the atmosphere and going into space. Leo kept the hand were Shinji was close to his chest, to make sure nothing would happen to his young ward. As soon as they were a good distance away from Earth, a portal of light opened in front of them. "What is that?" Shinji asked. "That is the Ultra Gate, Shinji," Ultraseven answered, "It will take us directly to the Land of Light." "Shinji, you better cover your eyes, it gets real bright in there." Leo warned. Shinji obeyed and closed his eyes as he entered the portal. As soon as both Ultras passed through the gate, it closed.

M-78

At giant and brilliant looking palace on home of the Ultras, a meeting was about to begin. 10 Ultras were in the meeting room of the palace that belonged to the head of the Space Garrison, the horned and caped Ultra Father. Along with him was his wife, Ultra Mother, the head of the Silver Crusaders. Also present was Zoffy, the 2nd in command of the Space Garrison, Ultraman, the first Ultra to defend Earth, Ultraman Jack, the third Earth defending Ultra, Ultraman Ace, the beam expert of the Garrison and the adopted son of Ultra Father and Ultra Mother, Ultraman Taro, the birth son of Ultra Father and Ultra Mother, Astra, one of the last Ultras of L-77 and Leo's younger twin brother, Ultraman 80, who happens to be also a teacher on M-78, and Yullian, 80's childhood friend and princess of the Land of Light. All of them were waiting patiently for Ultraseven and Ultraman Leo to arrive. Suddenly the doors of the meeting room opened.

"It about time you two showed up." Taro finally said looking at the new arrivals, "What took you so lo…." He trailed off as he saw what was in Leo's hand. A human boy. All of the other Ultras took notice of this.

Shinji noticed that all of the red and silver giants in the room were looking at him, Leo, and Seven. But more specifically: him and Leo. 'Did I get Gen in trouble?' Shinji thought worried. Then one of the giants, who seem to have medals on his chest, approached them. "Care to explain, Leo?" he sternly said. And thus Leo explained the reasons why he had brought Shinji to M-78 as well as his past. Needless to say, the Ultras were shocked at the boy's story. Every Ultra that came to Earth were adored by the children, and in return the Ultras adored them. 80 was especially shocked, because he was a teacher while he was on Earth in his human form, and taught a class of children during his defending of Earth. Ultra Mother then came up to both Leo and Shinji. "Leo, if you don't mind, I would like to take Shinji on a tour of our planet." Ultra Mother said to Leo. Even though Shinji could not see any facial expressions on the female giant, her voice had caring and kindness in it, much like that of his mother.Leo nodded to Ultra Mother, and handed Shinji over to her. Both Shinji and Ultra Mother, along with Yullian, who decided to join them, left the meeting room, and leaving the Ultramen to discuss the current situation on Earth.

The meeting was a real discussion. They had discussed everything, from the Ultra's failure to stop the 2nd impact and the cover-up the government of Earth had set up. Then, Ultraman asked Leo something. "Leo, the boy's last name is Ikari, right?" Leo nodded. "I believe his father was involve with this somehow." Ultraman then began divulge on all the info his human host, Shin Hayata, manage to uncover . Being an airport administrator had it's perks. He began to tell about all he dug up about Gendo Ikari, as well as Project E and of the coming Angels. The Ultra were now in deep thought, about all that Ultraman had told them. "There is something more this ,." Ultra Father said."but, what?" "Never mind that, father," Taro interrupted, "What we need to figure out who will be the protector of Planet Earth?"

"I believe I can decide that for you!" a voice said out of nowhere.

The Ultras turned to see the source of the voice. Standing before them was a blue and caped Ultra with an almost regal appearance. "ULTRAMAN KING!" Ultra Father exclaimed. Indeed it was the legendary ruler of Planet King. "Grandfather, what do you mean by you have decided who would defend Earth?" Zoffy asked. "Simply put, the one who will protect the Earth from oncoming angels….will be the boy Leo has brought here today." The Ultras, especially Leo, were shocked. "You're joking, right?" Ace asked. No I'm not. A vision came to me and told me that the boy would be the one to fight off the Angels and stop an even greater catastrophe than the 2nd Impact." King explained.

"Impossible! Shinji is just a child. He has gone through much. How can he handle such a destiny?" Leo explained. "It's just fate, Leo. He will have to deal what comes his way." King said. Leo sat down, still trying to contemplate what he has heard. "So, does that mean one of us will merge with him?" Jack asked. "No." King answered. All of the Ultras were curious. "I will give the boy an Ultra form." King explained, surprising the Ultramen. "And Leo.." King addressed to Leo, who promptly looked at him, "since he is closes to you , I will leave the boy's Ultra training to you. Teach him well." Leo nodded. He was still not to keen on the idea of Shinji fighting, but as long as he was his trainer, he would be satisfied with the situation.

When Shinji returned to the meeting room with Ultra Mother and Yullian, he was soon confronted by Leo, who told him of the situation and of his purpose. Surprisingly, Shinji seemed to understand the situation and agreed to take on the task before him, but he asked one question, "When will be the time for me to fight?" "You'll know, when it comes to you." Leo answered.

Soon after, Shinji stood before the large Ultraman King. The legendary Ultra brought his arms out and the two rubies on his torso glowed and shot two beams of red light that hit Shinji. Shinji shut his eyes and grunted, as he was levitated of the floor, as his body was surrounded by a bright light. About a minute or so later, Shinji opened his eyes. He saw he was now half the height of Ultraman King. He looked at his hands. They were silver and his arms were red with silver markings, as with the rest of his body. His chest had some sort of small protector around it, with a blue light in the middle of this chest. He looked into a mirror in the room, and saw his head was of sort of like that of Ultraman, but with two golden streaks on the sides of his fin.

Ultraman made a comment, saying he sort of looked liked a kid version of that Tiga guy he met some years ago.

Shinji never felt so strange, but he felt good as well. Leo came up to him and put his hand on Shinji's shoulder and asked, "What do you like to be called in your Ultra Form?" Shinji thought about it and remembered the time when he saw a giant robot with his mother and asked her what it was. "EVA." he answered, "Ultraman EVA."