The Invincible All For One!

Endeavor was pulled out and sent to Shoto as All For One slammed his fists out, a massive light erupting from his body!

Bullet pointed his fists forward and clapped his hands together. The gauntlets became one and shot off his arms like a missile, shooting at All For One, blowing up in his face as Mt. Lady ran over, smashing a giant wrench on top of All For One's head!

He pressed out two hands, immediately the wrench and rocket twisted into scraps!

He snorted and said "Machia. Finish them."

Gigantomachia ran over and smashed a mountain down on All For One!

Shinso stood on Gigantomachia's head and said "Take him down, Machia." in All For One's voice!

Bullet let out a breath and slapped his chest plate, fully arming himself as All For One held up the mountain, saying slowly "Another pest." the mountain exploded into sharp spears that shot out around at the heroes as they struggled to dodge.

Bullet shot forward and grabbed one, spinning around and stabbing at All For One, who slapped it to pebbles but Bullet shot an uppercut, steam coming from his armor. All For One took a fist to the chin as the armor exploded in an instant.

All For One had his hand at Bullet's stomach as Bullet coughed up blood, shooting back while touching his ear, "Baron!" another armor covered him as he shot into the sky, 4 tentacle arms shooting out and wrapping around All For One's limbs, saying "Come on!"

Everyone threw everything they had at All For One in an instant.

A massive shadow loomed over him as Fumikage's Dark Shadow grew bigger than Gigantomachia, covered from the light! He smashed All For One into the ground with a big fist as the rest of their attacks rained down on him, blowing out a massive explosion right on his back!

The smoke cleared and he floated there with an annoyed face, clearly younger than before!

Bullet looked at the arms that were rusting and he tapped on his back.

The arms popped off and shot out, wrapping around All For One before exploding in his face.

He waved the smoke away before slapping out a powerful shockwave, sending a group of heroes flying away.

Gigantomachia slammed his hand down on All For One's head as he waved his fist, it bulged and smacked Gigantomachia back but Mt. Lady stepped on him, stomping him into the ground.

Inasa pulled out Mt. Lady, sending Camie around as she blew smoke into the sky, changing day to night. Dark Shadow grew again and hammered his fists on All For One while Shoto blasted out a blue cold fire, drawing All For One in it!

However…

Massive energy lashes streaked across the sky!

The lashes whipped at insane speeds, slashing everyone, putting them to the ground!

Bullet's armor exploded in an instant. As he looked at the massive cut across his chest in shock, if not for the enhanced durability…

He'd be a corpse right now!

A floating regenerating skeleton pushed out a crackling lightning beam and blasted the same damage to Gigantomachia, saying "Fool… I will kill you!" Before punching out and blasting away the Dark Shadow.

He grabbed Hawks, who was protecting Fumikage as All For One regenerated to normal, saying "Step aside, Hawks. You can't protect him." as Fierce Wings grew on All For One's back instead!

He dropped Hawks and snorted at Fumikage, looking much much younger than before!

He flew up and shot away.

Bullet landed on the ground and rolled over, grabbing the air as he grinned, blood spilling from his teeth "Air. The Air becomes a vacuum in the shape of me but 10,000 times bigger!"

A massive hazy Bullet appeared in the air and grabbed All For One.

He coughed and couldn't breathe.

He turned to see Bullet slowly standing out, holding out his fist, grabbing the air. He coughed up blood and grinned, "Can you breathe in a vacuum, asshole? My wife told me it was possible for a few seconds… Unless you're holding your breath!"

All For One's chest burst open as his lungs exploded!

Blood splattered in the air and Bullet laughed, punching at the ground!

All For One smashed into the ground and splattered blood everywhere but regenerated in an instant. He turned to Bullet and glared at him, the wings flapping helplessly, Bullet laughed and explained "Come on, flap harder! Hahaha! I don't understand what she says, but she looks so good saying it I just listen! She said 'There's no air in a vacuum so you cannot fly unless you can manipulate Gravity but before you figured that out, your lungs would explode'. Too bad you're a disgusting freak and regenerating to nothing… She really wanted to cut you open and see what makes you tick."

He clapped his hands together in a prayer gesture, smirking "Please die, 'kay?"