As the fight rages outside, Aizawa and Vlad do their best to keep the class calm. Most of the members of class 1-B have never even faced a villain and the time that the others did he rendered them unconscious. Ochako is cradling Eri in her arms trying to keep her calm but another tremor from the fight going on outside the room causes the little girl to shiver in fear. Meanwhile, Momo, Sero and Monoma attempt fruitlessly to wake Izuku using different smelling salts, an electric jolt and even a daylight simulant. As another tremor shakes the room Aizawa sighs heavily knowing that the fight isn't going in their favor. "Yaoyorozu." He says in a calm voice, causing the creation quirk user to turn and face him. "I'm going to need you to create me a few things."

"What is it?" She asks hurriedly running over to Aizawa. Rolling up her sleeve she activates her quirk causing the skin on her forearm to emit light and twinkle in its blues and pinks.

"I need you to make a suppressed AUG submachine gun chambered in .45 ACP. A handgun, the G-18 automatic pistol chambered in hollow point 9mm I need 2 of these. A suppressed M200 Intervention in .408CheyTac as well as flash grenades." Aizawa's instructions are cold, calculated and the weapons he lists off make several of the students freeze up knowing what's going to happen. "There's a bathroom if you need the privacy to create these weapons. Meanwhile I am going to get ready to go out there and assist All Might." Momo nods before quickly running towards the restroom as the normally tired teacher walks towards the row of monitors that have all been shut offline due to the security breach.

"Sir you're not really going to go out there, are you? And what's with the firepower?" Tetsutetsu asks as the cold underground hero walks towards the desk and presses on the keyboard for a few moments. Aizawa says nothing; instead he presses the enter key before the wall of screens opens, revealing a door leading to an underground tunnel system and a combat suit with body armor, bladed weapons and magazines covering the wall.

"I am. The persona you know me as, as a hero is Eraserhead. You all know that I am an underground hero that is mainly support. Most of that is true, I am an underground hero and my title is Eraserhead but I'm not a support class hero." He explains before walking towards the mannequin covered in tactical gear. The armor easily slides over his more loose fitting hero suit and with the pull of a strap it hugs his skin tighter. The black tactical gear now form fitting similar to that of a soldier rather than a hero. "I'm the Executioner."

With this final statement he picks up the full head helmet and places it on. As it clicks into place on the armor he's wearing the helmet's visor lights up. The eyes shine a bright red color as they turn on. The students watch as Aizawa loads each magazine into the armor in different spots, the sniper cartridges on his thighs, the mags for the SMG on his shoulders and the pistol mags on his hips. When Momo returns with the requested items, she stops in fear of the sight of Aizawa but the teacher of 1-A says nothing and instead grabs the weapons from her. He straps the pistols in holsters on his shoulders. The sniper holstered across his back and the sighted AUG in his grip. Vlad." The other teacher nods in solidarity to Aizawa before escorting the students to the subterranean escape route meanwhile Aizawa says something to himself before opening the door. "We die in the dark, so that others can live in the light."

"Everyone into the evac tunnel, I will bring Deku you all go now." Vlad says in a stern voice pointing towards the emergency exit leading out of the room and back towards UA proper. Hitoshi looks back at Aizawa for a brief moment just as the door shuts behind Earaserhead.

The observation room itself was able to shift position to observe each of the 8 training sites, the entrance itself is far off in the staging area before the entrance of the sites and All Might had managed to drag the fight away from the main entrance but the thunderous battle going on in the distance was a clear indicator that he needed help. The quirk erasing teacher takes a deep breath before running towards the fight. Using his capture gear, he wraps it around one of the trees inside site Theta in order to swing from the tree towards the small neighborhood inside the training facility. Off in the distance he can see the shockwaves from each punch thrown by All Might and the dust it disturbs. Finally getting to one of the buildings, he climbs up the wall and onto the roof before resting the bipod of his rifle on the chimney and taking aim. Pressing a button on the side of the scope he switches the sight to infrared so that he can see them through the dust. The multicolored image of the four armed Overhaul lights up as he dashes towards All Might attempting to slash at him with long claws that appear blue through Aizawa's scope.

With how quick Overhaul is moving, Aizawa has a hard time lining up the shot, especially at almost a mile in range. However, All Might manages to land a serious gut punch on Overhaul sending him flying through 5 trees before the nomu clone attacks from behind. Overhaul's recovery from the impact creates enough of a window to train the cross hairs, light up the hashes and then he takes a deep breath. His eyes light up their crimson red color as he activates his quirk, glaring down the sights of his rifle he makes sure he's shutting off Overhaul's quirks before pulling the trigger. The loud crack of the round as it exits the chamber is followed by another sonic boom as the round from the anti material rifle screams through the air at supersonic speeds. On the other end of the battle field, All three combatants feel their quirks shut off all at once prompting both nomu to scan the tree line and surrounding houses for whoever caused this. As they're distracted, All Might grabs the two upper arms of the second nomu and proceeds to body slam the creature into the pavement. Turning to face overhaul though, he suddenly sees the beaked Nomu's head explode in a mess of mangled flesh and blood before the crack of sniper shot rings through the air.

"Aizawa Shouta..." The cloned Nomu gurgles out, turning its attention from All Might towards where the shot had come from. The eyes on the side of its brain blow yellow for a moment as it searches for the quirk erasing teacher, managing to locate Aizawa shortly before the quirk is canceled again. Almost as fast as the USJ Nomu, the clone sprints toward the direction of where Aizawa had shot.

After shooting the real version of Overhaul, Aizawa shifts his crosshairs and gazes towards the clone. The abomination sprints on six limbs almost like that of an inset scuttling across the ground and behind trees trying to break the effect of Aizawa's quirk. As All Might chases after the clone in order to prevent it from attacking Aizawa, the sound of cracking bone catches his attention. Aizawa didn't keep line of sight on Overhaul long enough for the Nomu to fully die and the head soup that's coagulating on the ground and being pulled back towards the neck stump of the headshotted nomu is a clear indicator that he isn't dead yet. First the skull materializes from the neck up, turning and facing All Might as it stands up to its full height, then the flesh that had been pulling itself together flows along the ground like water towards his legs. It creeps up his body before forming around the beaked skull reforming the muscle then the milky white eyes then the skin and finally the unkempt hair of the arch villain. Coming back to life again, Overhaul cackles madly at the pain of the regenerating flesh.

"The fool, his quirk can't stop regeneration forever. Eventually he will blink and I'm going to carve out his eyes and use his power for my own." Overhaul's words send a shiver of fear up All Might's spine as he turns to face the resurrected villain. "It's time I leveled the playing field All Might. I'm sure you wont mind an old friend would you? He's been dying to see you."

At this statement, Overhaul's throat swells to massive size like that of a frog's gullet bulging. The beaked mouth of the nomu unhinges as he gurgles and spits up something from within his throat. A thick viscous and disgusting green liquid leaks from his maw before a torrent of the fluid erupts, staining the street that they are fighting on. The mess coagulates into a large black mass in the center, sucking up all of the liquid that had been expelled. The mass suddenly grows a massive hand before another explodes from the side of it. The hands wriggle about before the ass expels a set of legs then stands upright. From beneath the flesh a pair of khaki trousers with skulls over the kneecaps emerge from the mass as if floating upon a lake of water. From where its shoulders are mass writhes and contorts as a head emerges atop the shoulders. The head missing the top of it's skull revealing it's exposed brain, a metallic beak forms in front of a mouth filled with gnashing fangs.

"I'm sure you remember this one all too well. The good doctor thought that the first iteration was a success so he had him cloned before you had your first match. Now he's ready for round two." Overhaul hisses as the new high end stands to its full height to face off against the man he was designed to kill.

"If you think this overgrown science fair experiment is a match for me then you're sorely mistaken. Overhaul." All Might responds half growling the sentence through his teeth as he lunges at the new nomu before planting a right hook stronger than any punch he's thrown in 30 years into the gut of the nomu. The shock absorption quirk is nowhere near strong enough to absorb all the power from the prime version of All Might resulting in the bioengineered beast getting launched into Overhaul. "You'll need at least 10 of these guys to even make me break a sweat."

"Be careful what you wish for..." Overhaul half whispers as Nomu stands up from on top of him. "I have to thank Keigo Takami for dealing with a certain pest a while ago. That madman was nothing but a nuisance but his quirk is indeed useful."

"W-what?!" All Might stammers watching Overhaul calmly walk over to the nomu then scrape the pad of his index finger on the forearm of the nomu.

"Indeed, his mission to assassinate Twice was successful but he never disposed of the body. Thanks to him and the doctor for providing it to me I have assimilated twice into myself and I now have his quirk." Overhaul gloats as the nomu is suddenly covered in this strange mud like substance that sloughs off into mounds on the floor. First 3 then 5 then 7 and 9 the blobs start to coagulate and take form before appearing as direct copies of the same Nomu.

"I just had to open my mouth, didn't I?"

Moments after he had pulled the trigger, the second overhaul had rushed him. It had easily figured out where he had fired the shot from and in a few seconds it had covered almost an entire mile. This overhaul was smarter than Aizawa had anticipated it to be, as instead of attacking him head on, the nomu goes about scraping its hands against the trees trying to avoid line of sight with Aizawa. The effects of its quirk cause the trees to warp and stretch before slamming onto the building that he was perched on. The building crumbles beneath his feet causing him to lose grip of the rifle and tumble onto the ground. Quickly dashing out from the debris of the collapsing building, he draws both pistols from their holsters and clicks them to full auto. The dust from the collapsing building and now the labyrinth of thorns, roots, and distorted trees provide plenty of cover for the nomu overhaul to hide in. Without the scope of his rifle he doesn't have thermal imaging to help him find his adversary but the two are far enough away for his hearing to assist him in the fight.

"I knew you were a coward Overhaul, but this is on a whole new level." Aizawa mutters to himself scanning the encompassing thorns for any signs of movement. He's now in a very dangerous game of cat and mouse.

Walking slowly trying not to disturb any of the thorns, he slowly begins navigating the pseudo maze that was created around him. Having had about enough of these games, Aizawa rips the pin out of a thermite grenade before chucking it full force at the thorns opposite him. The blazing light from the thermite causes him to turn away as it burns through the mass of gnarled roots and tree limbs. As he turns his back from the light though, he immediately comes face to face with the beaked face of the nomu. He instantly activates his quirk and raises both pistols in order to dump both 50 round drum mags into the creature at point blank range. The hollow points merely bounced or deflected off the stony armor it had clothed itself in during the earlier battle with All Might. Discarding both pistols, Aizawa grabs another thermite grenade before yanking off the pin and punching the beast in the mouth with it.

The blow causes the creature's beak to break allowing Aizawa to punch the live grenade further down the clone's throat before it ignites. Getting away from the extreme heat of the thermite reaction, Aizawa sprints through the hole created by the first grenade before rushing towards All Might's position. The mile run feels like an eternity for Aizawa watching as All Might punches through the head of one of the cloned nomu before having to dodge a strike from another. With his eyes burning Aizawa once again activates his quirk canceling out the cloned nomu's abilities giving All Might the window to kill 4 of them at once leaving 5 more. However Aizawa notices that Overhaul isn't in the fight and blinks, reactivating the quirks of the cloned nomus. Ereasrehead desperately scans the surrounding forest for any sign of Overhaul but he hears him long before he sees him.

"Even in death, the work of a doctor must go on. The corrupted must be cured, and I must bear the burden of cursing myself to rid the world of its plagues." Overhaul's voice echoes through the battlefield. "You will know despair... you will know fear and when the last quirk is extinguished then the world may rejoice and they will know bliss." finally catching sight of Overhaul, he is kneeling on the ground and the brown material that had created the fake Dabi all that time ago is pouring out from the Nomu's body. The strange substance suddenly coalesses into duplicates of the original Overhaul, masked with the beak of a plague doctor.

"Let the damned walk again... The march of the dead men begins."