AN: Hello, fellow readers! I would like give a shoutout and thanks to "Game2002" and "Javimagine236" the authors of "Justice of Two Worlds" and "Marvels of Two Worlds" respectively for giving me an inspiration to create this idea because not a lot of writers have done this type of crossover. There are going to be elements from those stories that will be in this story but I have tweaked a bunch of things and added some parts that I wanted to include in this story.

It's a My Hero Academia x Marvel story but there is a surprise from one certain DC character that will appear soon, so stay tuned. There's an explanation into how this DC character got in this story soon.

The My Hero Academia/Boku no Hero Academia story is set after the Joint Training Arc (with Class 1-B) and before the Work Studies Agency Round 2 and the Paranormal Liberation War arc.

I don't own anything from Marvel or MHA/BNHA. Please support the official release.

A long time ago, a baby was born with a strange glow inside him that later on it gave him superpowers. Over time, more children are born with the same strange glow which led to an estimate of 80% of the world's population having superpowers thus these powers are known as Quirks.

Since there are a large number of people with superpowers, government officials all over the world have sanctioned laws that can make it possible for the population to become super heroes. This law has made dreams come true, something that seems to be common in the later years.

However, a person can't be a hero by having a Quirk then putting on a costume to fight crime. There are Hero Academies across the world for young students to learn basic fundamentals about being a hero as well as learning the general education. Once students have completed their studies and procedures, they will receive a hero license which allows them to practice what they learned from their hero courses and become the best hero they can be.

However these select young heroes are in for an adventure that they will never forget.

In a closed shopping mall in Musutafu, Japan at 12:00 am in the middle of winter.

Most of the time at this hour, people would go to sleep or for anyone who has graveyard shifts work until the early morning. It's not the case for Class 1-A students of U.A. Academy where some of them were a bit sleepy but are there anyway because it's a special training exercise.

Class 1-A's homeroom teacher Shouta Aizawa, a.k.a. Eraser Head, took his class to the closed shopping mall where they are doing a special training exercise.

"Come on… Why must we be awake in the middle of a cold night doing something like this?" complained Mineta

"We're supposed to be training for night patrols, so what a better time to do it than night? Although doing it during winter is a bit much." said Kaminari

"You know, they could've used simulations for this.." Mineta said to him

"That doesn't compare to the real thing! We can obtain better experiences this way!" said Iida with one hand forming a chop.

"Good thing some of us rested earlier so we could be prepared for situations like this." said Ojiro

Aizawa then cleared his throat to get all the students' attention.

"As I said yesterday, we are doing a special training exercise. We are doing this at night because heroes need to prepare themselves for anything whether it's day or night. We specifically chose this location because villains will attempt to rob places that have less people in it. This training exercise will be done with ten teams of two. Teams will be decided by drawing duplicate numbers. The teams will patrol around the mall to track down the villains and capture them. Some of our staff members and other heroes have volunteered to play the villains. Your grades will depend on how you act around them." said Aizawa.

The students were then assigned to the teams they were assigned to by each student having the same number.

"Alright, the teams are now formed, you may begin" Aizawa said before getting into his sleeping bag. "Wake me up when you're done."

"Not fair… He gets to sleep while we do this ridiculous exercise…" grumbled Mineta

The assigned teams set off to different locations in the mall to start the exercise.

"I can't believe I'm assigned with Deku of all people!" said Bakugo who is annoyed that he has his childhood friend as his teammate in this exercise.

"I am in a team with Kacchan. Though I did partner up with him in our finals against All Might but still it is not as bad as it seems now than it was back then." Midoriya thought nervously. He suddenly yawned.

"Hey! You damn nerd! You're supposed to be awake for this!" Bakugo yelled.

"S-Sorry Kacchan…" Midoriya said as he tried to stay awake. "Uh… Kacchan do you think we should strategize in case we did see the mock villain"

Bakugo thought about it then grunted at Midoriya. "Just don't get in my way!"

Midoriya sighed but felt a bit relieved as Bakugo has treated him less of a bully and more of an uneasy ally.

The two walked a fair distance and then a sudden flash came in and temporarily blinded the two young heroes. By the time they opened their eyes, both of them saw an unusual sight. A strange blue portal right in front of them.

"Uh…What the hell just happened?" asked a confused Bakugo.

"I-I think it's supposed to be a villain attack?" Midoriya answered. "Though I don't think it's those villains we fought back like in training camp or USJ. It could be something else."

Bakugo and Midoriya looked at the blue portal for a while and then Bakugo took one step and then…

"Midoriya! Bakugo!" The individual shouted.

Both young heroes turned to see where that voice came from and it was Kyoka Jiro and her teammate for the exercise Fumikage Tokoyami.

Both Midoriya and Bakugo looked at their two classmates as the latter were running towards them.

"Tokoyami and Jiro, what are you doing here?" Midoriya asked.

"We were walking around to find the mock villain but we saw a bright light and we thought it was the mock villain so we came here." Jiro said.

"It seems to us that this was the cause of that bright flash." Tokoyami said, while pointing to the portal.

Midoriya nodded and the others looked at the portal. All of them wondered what was going on with that portal. They suddenly heard Present Mic's voice behind them.

"Kids stay away from that portal!" Present Mic said.

The four students heard one of their teachers and tried to back away from the portal. Suddenly the portal starts to pull things into it. The four students were pulled into the portal as Present Mic was too late to get them. The portal all of a sudden vanished leaving a confused and concerned teacher.

Meanwhile on the other side of the Mall.

Uraraka and Iida are walking through the area of the mall finding the mock villain.

"Hey Iida! This is the first time I have teamed with you on this type of training." Uraraka said happily

"Agree! I am excited to train with you and see how we fare against the mock villain!" Iida said excitedly.

"I hope Iida does that funny voice to the mock villain because it's so funny and adorable." Uraraka thought.

The two heroes were walking down the area and the mock villains were nowhere to be found.

Iida and Uraraka were going around a corner to where they saw Ejiro Kirishima and his teammate for this exercise, Momo Yaoyorozu.

"Kirishima. Yaoyorozu. Are you both here finding the villain in this area as well?" Iida said.

"Yes Iida. It seems that the both of us were trying to find the mock villain in the area we were in but it seems there isn't one there." Yaoyorozu said.

"So we went to a different location and well we're here right now." Kirishima said "Joo. This is getting boring. When will these villains show up?"

"You're supposed to be patient. That is what we're supposed to be learning when it comes to situations like this." Yaoyorozu began "It's not like they're going to appear out of nowhere".

The moment Yaoyorozu finished her sentence a bright flash showed up and temporarily blinded the four young heroes present. They all opened their eyes and saw a unique sight. A blue portal right in front of them.

"Um… what happened?" Uraraka asked.

"I think it's supposed to be a secret attack by our mock villain." Yaoyorozu said.

The four students heard someone landing behind them and they all turned around to see the Space Hero: Thirteen.

"Alright. Let's get this started and… Wait? Where did the portal come from?" Thirteen said shockingly and confused.

"Wait Ms. Thirteen! You didn't do that portal?" Uraraka said.

"No I didn't. I also noticed a bright flash before I got here. That wasn't one of you right?" Thirteen said.

The students present all shook their heads. They later looked at the portal wondering what was going on.

All of a sudden, the portal starts to pull things in and, unfortunately, the students were close enough that they started to be pulled towards the portal. Thirteen activated her Quirk of black hole to try to get the students back to her but she was a few seconds late and Iida, Uraraka, Kirishima, and Yaoyorozu were all pulled into the portal. The portal closes as soon as the students are pulled in.

At the same time as the others.

Shoto Todoroki and Tsuyu Asui were patrolling at the food court area of the mall. They were walking around when suddenly they found two mock villains Mt. Lady and Kamui Woods.

"HA! I was wondering when the both of you will show up!" Mt. Lady said in a horrible villain impersonation.

Kamui Woods looked at his partner for 10 seconds baffled into what Mt. Lady was trying to be a villain.

Todoroki and Asui looked at Mt. Lady flabbergasted for a second then started to assume battle positions.

"So Todoroki, What's the plan against them? *Ribbit*" Asui said in a battle ready stance.

"We will have to split them up. You take Kamui Woods and I will take on Mt. Lady." Todoroki said, starting up his ice and flame quirks.

Both Asui and Shoto moved away from each other and then faced their respective mock villains battle ready. Mt. Lady and Kamui Woods were also battle ready. The moment all of them were about to have a fight, a bright flash appeared and blinded everyone temporarily. Todoroki opened his eyes and saw a strange blue portal right in front of him. Asui also opened her eyes and saw the portal as well. Both Mt. Lady and Kamui Woods opened their eyes and saw the portal but noticed that on their side the portal seemed to be less light than the students' side.

"What was that?!" Mt. Lady screamed. "Did you two have anything to do with this?"

Both Todoroki and Asui shook their heads. Todoroki then looked at the blue portal for a good then suddenly it starts to pull things into it. The two students were being pulled into the portal. Kamui Woods made an attempt to save them with his quirk Arbor however he was a second late and the two students were pulled into the portal. The portal closed immediately after leaving Mt. Lady and Kamui Woods alone in the mall food court.

"This is bad." Mt. Lady said worriedly.

"Let's go find Erasure Head and tell him what happened." Kamui Woods said.

Elsewhere in a different universe

In the night cloudy sky outside of New York City, two people were on the roof of an abandoned warehouse analyzing what was going on there. The two people are a female with red hair in a black bodysuit with a gold belt and gold gauntlets and the male is wearing a gray bodysuit with a unique logo, black cape, black gauntlets and boots, a gold belt, and a mask with pointy ears.

"My intel is correct. A.I.M. has built three machines that can make interdimensional travel." said the female individual.

"It seems that they have already activated the machines. Let's wait and see what comes out of it." The male said as he analyzed A.I.M.'s plans.

"Don't you think it's better to destroy it than see what comes out of it?" said the female.

"No. It could be allies from other dimensions coming through by accident or villains." said the male sternly.

"Maybe you're right but we might be on our guard in case a villain comes through that portal." said the female.

The male didn't respond but nodded to her as both of them looked at the portals from above and saw what happened next.

In the warehouse, A.I.M. scientists were analyzing the portals and seeing if it's stable for travel. One individual who is called the Scientist Supreme went to inform his boss about a sudden discovery.

"M.O.D.O.C., we seem to have a problem with the dimension portals." said the scientist.

The man with a giant head and small limbs in a gold rocket powered chair named M.O.D.O.C. turns to look at Scientist supreme.

"What is it?" said M.O.D.O.C.

"The Portals seems to be working although there seems to be an anomaly on the other side of the portals. There are occasions where the portals will do a gravitational pull to anything or anyone that is facing the portals on the other side. I hypothesize that if someone discovers the portals they will be forced into entering our dimension if possible." the scientist supreme said.

"That is a unique discovery. We must ensure to prevent this anomaly from happening to us if we plan to conquer other dimensions. Have the scientist analyze the data and fix the anomaly and report back to me." M.O.D.O.C. said.

A sudden noise happens as A.I.M. personnels looked at the portals where it made unusual wave noises and then a loud boom which led to A.I.M. seeing an unusual sight and hearing sounds like multiple screams.

"AAAAAAAAAAAAAAAAHHHHHHHHHHHHHH!" *CRASH*

A.I.M. witness ten people in weird costumes blasted out of the three different portals and crashed close to M.O.D.O.C. and the scientist supreme.

Those ten people then woke up and saw people wearing yellow uniforms with guns. Midoriya then noticed a man with a giant head and small limbs in a gold rocket powered chair looking at them.

"Uh…Where are we?" thought Midoriya.

The ten students of Class 1-A looked around and saw men in yellow uniforms with guns pointing at them realizing that they are not in Japan anymore. From this point on, they are in for something they will never forget.

AN: And Done! Hope all of you enjoy this first chapter! If you catch the DC surprise in this chapter then good job. If not, I made it obvious who it is! If you still don't get it stay tuned.

By the way, the version of A.I.M. I'm using the one from The Avengers: Earth's Mightiest Heroes. Which is going to be the base for most of the Marvel Characters going forward except the surprise person and a certain team that will be introduced later on in the story as well as another team who I have planned to be in this story but it might take a while for them to show up.

If you have feedback let me know.

Rebirth Exile signing off! Peace!