DiRunner: I have a basic idea for the plot in my head, but I'm just going with what feels natural for the characters after that. I just am really passionate about this crossover and am happy that others are at least able to enjoy it too.

The next day, Izuku woke up to his brother lifting weights in their room. He had his own set of weights, which were way too heavy to lift for Izuku, even after his training All Might instructed him with. Hellboy always lifted his 75 kilogram weights in the morning. Izuku didn't really see how that would help him as it was just a tiny fraction of what he has lifted before but it didn't bother the older brother. Izuku got on his uniform, as did his brother.

Today, Hellboy didn't put on a T shirt for fear that an incident like yesterday would happen again and he didn't want another shirt ruined. Again, Hellboy couldn't button his shirt up and just left it halfway done, getting fed up with the uniforms. "I tell ya, they don't really think about people like me when making these shirts. What do you think?"

Izuku stammered, "W-well, not many people have hands as big as yours."

He nodded, "Well, I did see a girl yesterday that had hands bigger than mine. Both hands were bigger than mine, so they gotta have something to help us big hand folk, y'know?"

The green-haired brother shrugged, finishing up with his tie and heading out of the bedroom. They had breakfast, said their goodbyes to Inko, who added in Hellboy's direction, "And try not to get any more clothes destroyed, if you keep up with that you'll have no clothes by the end of the school year!"

The red behemoth waved, closing the door with his tail, "I know, I'll try to keep the monster hunting to a minimum today."

With that, they were off to their second day of school.

When they got there, class hadn't started yet and plenty of the students had yet to arrive. As soon as they entered the room, the red student was beckoned by the pink girl from the entrance exams.

"Hey, Hellboy!" She almost shouted, even though she was a single seat away from him. She waved to herself, "C'mere!"

He turned to his brother, who shrugged and went along his way to his seat. Hellboy walked to the girl in just a few steps. He began to scratch the back of his head, "Look, Ashido, right? If this is about yesterday, I'm sorry you got involved."

"Psht!" She waved the apology off, replying with, "There wasn't much you could have done, you were practically being mauled to death out there. I just wanted to talk since we hadn't gotten the chance after the entrance exams and I wanted to thank you for basically saving me then."

He gave a single chuckle before shaking his head, "Nah, it wasn't really that big of a deal."

She frowned, "Sure, but only one of us got stabbed because of it." She pointed to him with her right hand, "And that was you. So I wanted to thank you and actually apologize for being the reason why you got hurt more than you needed to."

He grinned, raising an eyebrow, "I thought that was part of the job at this school, becoming a hero and all."

Mina nodded, pointing at him with a finger gun, "You have a point there, Red."

"Red?" Hellboy kept his eyebrow raised at the sudden nickname.

She giggled again, "Sorry, guess I should have asked first. Is it okay if I called you Red?"

Really? We only met a couple days ago and hadn't talked too much at all since but she's making a nickname for me. He shrugged, tilting his head to the side, "It's a good nickname, I guess it's alright."

Mina grinned, putting her thumb up, "Cool! Then you can call me Pink if you wanna! I hope we can be really good friends."

He nodded, smiling down at her the best he could, "Alright, yeah. Sounds like a good time, Pinky." He turned back around, able to hear the chippy pink girl behind him exhale with glee as she had just made a friend. Hellboy, likewise, was pretty happy about it too.

Eventually, classes did start and the day simply continued on like normal. During some of the lessons, Hellboy had to get some direction from his brother, who gladly helped the red student when he could. It was during one of the lessons further on in the day that the class was interrupted by a noise, similar to a jet, getting closer to the room. The door was slammed open and All Might, in his superhero uniform, leaned into the classroom shouting, "I HAVE ARRIVED!"

Everyone fell silent as he walked into the classroom. "Now, as I'm sure you're aware, you all have turned in blueprints yesterday for your…" he paused for effect and flexed with each word, showing off different parts of his outfit, "SUPER! HERO! SUITS!" he stood back in his heroic stance, giving everyone a sight of his pearly white teeth as he smiled, "I'll have you all know that the people in the R&D department have been working their hardest to have them all ready for you today!"

Everyone got excited at this point, eager to see how their suits turned out and how they looked on them. All except Hellboy, who never actually turned in any costume design. Not like I'd wear it anyways, the whole tights scene really isn't my thing.

"Not only will you be able to try them on, but you will also be able to try them out!" The large man waved them towards him, "SO COME ON, WE HAVE SUITS TO PUT ON!"

Everyone got up from their seats and rushed out of the door. Hellboy was the last one to make his way out the door when Aizawa met up with him.

"You never turned anything in." He pointed out, dryly.

Hellboy, tilted his head toward his teacher, "That wasn't for a grade, was it?"

The darker hero lowered his head and sighed, "It was, but I had things handled for you since you were out for that portion of class. We even got the special order you asked for."

Hellboy raised his head quickly, "Wow, that was fast."

"We need everyone ready and able as soon as possible. The quicker you learn how to use it, the more effective you'll be as a hero."

The devil nodded, speeding up to catch up with his friends.

It was time to get outfits on, and Hellboy's things were in a larger suitcase. He opened it slowly, somewhat nervous to see what his teacher was going to make him put on. When he opened it he found a pair of pants that felt like a much thicker material than what he usually wore. A small bit of undergarments laid underneath that were made of an even thicker material and that felt like metal plates were placed within the layers. Combat shoes, much like his own with the exception of spikes along the top of the boot. Below that was a grey trench coat, the same color as the UA uniform jacket. It had a patch on the left shoulder that had the UA Hero Academy logo on it in a vibrant red.

He sighed as he tried putting it on, wait for the Right Fist of Doom to- "Slip right through?" The sleeve was large enough for his fist to fit through! It was like a glove! He rolled the sleeve up though, as to not hide the fist inside the coat. He also rolled his left sleeve for fashionability. The trench coat had a small slit along the back going from the bottom up, where his tail fit right in. He reached into his left pocket, feeling a glove which he slipped on. He also put on a belt which had a holster of some kind on the left side.

Mineta was the one to point out the reason for the holster, "H-H-HELLBOY! Is that a g-g-g-g-"

Hellboy reached into the suitcase, picking up a much bigger version of a magnum pistol with a barrel and ammo slots that were supersized to make it look like a miniature cannon. Hellboy smiled as he looked down to find ammo for it neatly packed into the belt already. He grinned holding it in the air, feeling the heft and craft, the stainless steel barrel with a large ironsight along the top. The handle was a polished wood with rubber along the outer sides of the handle. The trigger was covered by a quarter inch of the same stainless steel that made up the barrel. The trigger itself, Hellboy could feel, took a lot of pressure to pull.

He holstered the gun, looking down at Mineta as he slammed the suitcase shut. "Yeah, that's a monster killer." He walked out of the locker room, with weight in his steps.

As he got outside to where the rest of the students were meeting up, he saw Uraraka, who was looking at her suit with a bit of pink on her face. It was a black and pink outfit with what looked like gauntlets and knee-high boots. She also donned a belt, which rested at the top of her hips. He approached her, "You don't look too happy about the suit."

She looked up at him, wearing an anxious smile, "Yeah, I didn't really ask for this to be skin tight so it's pretty embarrassing. Do you think it looks okay?"

He shrugged, "Yeah, you're fine. You could probably hit someone with those gauntlets on your wrists, though."

She looked at the gauntlets and began shaking her hands, "Oh, no, no! Those are for my motion sickness after using my quirk!"

Hellboy nodded, looking to the other students. He met eyes with Mina. She was wearing a skin tight suit that was a turquois with patches of purple in a camouflage pattern. Above that was a tan and had white fur lining the neck. On her feet was a similarly tan and purple pair of boots that almost reached her knees. On her face was a white mask that only covered above her nose. She called out for him when their eyes met, "Hey, Red!" She began her stride towards the devil, with a huge grin on her face. When she got to him, she studied his outfit, her grin getting larger as she flexed her arm, "Wow, you're making a statement with those muscles you got, huh?"

He shrugged, scratching his chest with his right hand, "Not really, I just can't use buttons so easily with my hand so I'm leaving it how it is."

"Ah, I see. It's a good look though, you should keep it." She continued to study his outfit and her eyes widened when she saw the holster, "Woah! That's a big gun! Do you know how to use that?"

He pulled it out, making sure the safety was on, which it was, and pointed it at a nearby building. "Point and pull the trigger. It's not difficult." He lowered it, putting the gun back in the holster. He looked to Mina's outfit, and trying to decipher all the colors on it. "And what about you? Trying to make a fashion statement or fight bad guys?" He finally joked.

She looked down at her outfit, still wearing her smile, but a bit less than she had been. "I don't see why I can't fight crime and look good at the same time." She looked back at Red, still smirking, "Think it looks cute?"

Hellboy nodded, "It definitely looks like it was made for you, though the small jacket doesn't seem to be doing much."

She pointed at Hellboy with finger guns again, "That's what makes it fashionable."

Uraraka peeped up, thumb in the air, "I think it's really cute, Ashido!"

The pink girl turned to the brunette, "Your outfit isn't half bad either, Uraraka."

Hellboy peered over at the door he came from, letting the girls talk among themselves, seeing his brother walk out in his suit. He had a baggy, bright green suit with a white accent. He donned large white gloves and his usual bright red sneakers which stuck out on his costume. He also had a bright red belt that clipped using what would usually be found on backpacks. On his head he had a plastic guard that had what looked like teeth on the bottom row. The top was cloth, all except for two protruding, plastic horns that were a darker green than the rest of the suit.

The devil remembered this suit, it was one he made the design for when they were kids after they had defeated the Kappa, turtle monsters. Izuku had thought he was like a real hero, defeating monsters that lurked in the woods. He still idolized All Might, but the newfound interest in the adopted brother influenced the outfit slightly. He made the suit a bright green to contrast Hellboy's red and the horns, but the rest was mostly because of the hero.

The younger brother laughed, hugging Izuku as he approached, "I remember that suit!"

Izuku laughed with him, "Y-yeah! How long ago was it when I made this?"

"Almost eight years ago." Hellboy stood back, taking in what was obviously a work in progress, "Definitely aged well, I can tell you that. Ma did well, huh?"

"Yeah, she did great!"

All Might got everyone's attention with his laugh, "HA HA HA! Look at everyone now, looking like true heroes of the future! Now, we didn't bring you all here today for a fashion shoot."

Aizawa nodded, taking the stage. "Before we got here today, we assigned everyone to teams of two. You're all going to be using your suits in a mock battle to see just how practical they are!"

Everyone exchanged looks, some excited, others not so much. The teacher continued, "This will be a battle of Heroes vs Villains!"

All Might started from where the other teacher left off, "Now, the villains in this objective-based game will be defending a fake nuclear core bomb inside the building! Their objective is to keep the heroes away from the bomb." The hero flexed his right muscle, and continued, "The heroes, as you've probably guessed, are going to be trying to find and reach the bomb!" He gave the stage to Aizawa once again.

"We will be using a hat to determine which team goes against whom." He pulled out a hat with paper, which he put his hand into and pulled out two pieces. "The first match is between Team A and D, making Izuku Midoriya and Uraraka the heroes with Iida and Bakugou being the villains!"

Izuku's heart crawled to his throat as he looked first at his Tenya, then to Katsuki, to Ochaco and finally to Hellboy. His brother smiled, patting his shoulder with the Right Fist of Doom. "Don't worry, you've got this."

The teacher finally announced, "All other students will follow me and All Might to the monitor room."

Hellboy turned to where the other students were headed, looking over his shoulder to tell his brother one last thing, "Kick Katsuki's ass."

In the monitor room there were screens which the other students could plainly see the forthcoming battles. Bakugou, who had an outfit that screamed everything he was about, explosive, and Iida, wearing a full suit of armor, could be seen in position near the bomb. Izuku and Ochaco could be seen waiting outside the building for the announcement to begin. Nothing could be heard on the monitors but Izuku and Uraraka could be seen talking while looking at the building, serious looks on their faces. Tenya seemed to be talking to himself while Katsuki was only waiting, starring with a look of pure anger at the door ahead of him. The teacher made his announcement and the heroes were on their way in.

The villains were already having issues, however, due to the blonde and the armored student arguing as Katsuki walked out of the room and began to search for the heroes. Hellboy was next to Mina in the control room, who nudged him. "How do you think this is gonna go, Red?"

Hellboy shook his head, "Katsuki may be good in a, but my brother is good at winning despite the odds. My bet is that he already has a plan and he was counting on that idiot leaving the bomb."

She turned to him as his eyes were glued on the screens. "You really regard Deku highly, huh?"

He nodded, "He's one of the smartest people I know, he's made a journal based on other heroes, figuring out their strengths and ways to take them out. Bakugou was one of them. I know he's got a plan, and probably a backup plan for that!" the devil was grinning as Katsuki made his confrontation with Izuku.

They began talking to each other as Uraraka ran past. Bakugou didn't stop her. His sole focus was on Izuku. Not anymore, Deku. Today is the day that I'm going to tear you apart. LIMB! FROM! LIMB!