William Afton, now inhabiting his colossal mechanical form, shattered the door of his workshop with a single, forceful push. The metal frame crumpled under his immense strength as his massive hand reached out and gripped the wall. He cautiously extended his head into the hallway, scanning both directions. The corridor seemed empty, but the sound of the door breaking had undoubtedly alerted the others.

He didn't have to wait long before he heard hurried footsteps to his left. Turning his head, he saw the Funtime animatronics sprinting down the corridor. Their eyes widened in recognition and horror as they turned the corner and saw the monstrous figure of William's new form.

Without hesitation, William's hand fully emerged into the hallway. He lifted it, and from his palm, several black, writhing tentacles shot out, piercing the chests of the Funtime animatronics. Their souls were drawn from their bodies, absorbed into William's being. He could feel their presence in his mind, now mere spectators in the abyss of his consciousness.

The tentacles retracted back into his hand, and William began to pull himself out of the room. His enormous size forced him to crawl through the narrow hallway, metal scraping against metal as he moved. He advanced methodically, absorbing the souls of any animatronic he encountered. Each soul he consumed added to his power, strengthening his resolve and fueling his dark ambition.

There were only a few animatronics left, but they were the most formidable. DJ Music Man, the Blob, and a few others stood in his path. He had already dealt with most of them, and now only the Blob remained. The Blob, a grotesque mass of tangled animatronic parts and lost souls, loomed before him, its many eyes glaring with defiance and fear.

William raised both of his colossal arms, and black tentacles erupted from his hands, wrapping around the Blob. Additional tentacles, twenty in total, shot out from his back, further immobilizing the abomination. The tentacles began to morph, forming a spiraling, gaping maw that sucked in the Blob, consuming every soul within it, including the primary soul that held the monstrosity together.

As the last remnants of the Blob were absorbed, William retracted all of the tentacles back into his body. He could feel the surge of power from the newly assimilated souls, their energies merging with his own. His eyes glowed an even more intense purple, and he felt invincible, an unstoppable force of darkness and retribution.

Standing amidst the wreckage of what once was their home, William surveyed the aftermath of his rampage. The remaining animatronics, those few who had managed to evade his grasp, watched from the shadows, their fear palpable. They knew that confronting him head-on was futile; he had become something far beyond their capabilities.

"Run if you wish," William's voice boomed, echoing through the ruined corridors. "But know that I will find you. This place is mine now, and nothing will stand in my way."

He began to move again, his new form a terrifying blend of mechanical might and supernatural malevolence. The hunt was far from over, and the animatronics knew that their only hope was to regroup, to find a way to stop the monster William had become.

But for now, William Afton was unstoppable, a dark force that would not be denied. And as he prowled through the halls, the souls of his victims cried out from within, their torment a testament to his unyielding will.