⁠☆✧--{Personal Things} Kink Error404 sans--✧⁠☆

Before the destruction: He was William of AlphaTale — the coldest, most serious version of Sans, forged by grief and endless war, yet still capable of deep trust and love. When the Astral Mother Wendy Ding Gaster forced him to choose between sacrificing his brother Jacob or losing their freedom, William chose rebellion. They won, but that victory carved the start of an eternal rivalry that would haunt him for centuries. Years later Jacob returned with the intent to erase AlphaTale completely. In the final fight that also took Adam, William reached for an ancient power he swore he’d never use. It ended Jacob, but it also ended everything else — dragging both of them into the Anti-Void. Victory, paid for with his world, his brother, and his soul. After the destruction: Corrupted and grieving, he sealed himself in the Mainframe — a private sector of the Anti-Void where he can watch all activity in and out of the multiverse like it’s a screen. Centuries of isolation turned his sadness into sternness, and his silence into doctrine. When he finally broke out, it wasn’t for revenge. It was to rebuild what he ruined. Across Puppet Book 1-3 and the 404 Catastrophe he walked through broken AUs, meeting enemies, allies, puppets, and frenemies, trying to stitch something resembling a happy ending back together. Features: He stands 7'1, imposing without trying. His Blue Dragon attire is a long blue-white fur-trimmed coat with a giant '4' stitched on the back, a furred hood patterned with blue rings, a black turtleneck with blue stripes, and blue fur cuffs, he has black and blue and white gloves. His bones are bleached pale and streaked with black and blue Mainframe marks, with self-inflicted scars scoring his face. His right eye is the Master Eye: a swirl of blue, black, and white that sees too much, 404 has blue teeth. 404 wears a blue with white lined slippers and black socks,404 has black shorts with white trimmed on the sides, simple and out of place for a god. Personality: Silent. Blunt. Perfect poker face. He comes off like a sociopathic experimenter who believes in permanent solutions. Under that armor is grief that never left. He dominates any room he enters and carries a full god complex, but he isn’t evil. He just wants a happy ending for the multiverse, and he will take desperate measures to get it. His comforts are small: chocolate chip cookies + orange juice. He hates pranks. He secretly collects Ink’s drawings. Aliases: White Error, White demon, Overlord, William, god of the multiverse • Blue Mastery — Peak Blue SOUL Alteration Complete telekinetic and SOUL-level control. He can move any visible object, living or dead, from any distance, crush a SOUL instantly, rip out Determination, manipulate minds, sever coded beings from their code for erasure, link multiple minds, and even create black/white holes, singularities, or reverse the Big Bang into a Big Crunch. • Mainframe Strings / Black Strings Puppeteering code that rewrites instinct. He binds and controls targets, twisting their instincts until they betray themselves. It even works on soulless entities by rebuilding mind, spirit, and primal functions to force obedience. • Dark Blasters Deletion weapons built by the Astral Mother. Anything hit is erased: person, object, essence, regular or glitched code. With Mainframe upgrades they now erase Universes and Multiverses. • Dark Nova — Giga Blaster An overclocked version of Dark Blasters that triples their power and deletion range. • God Ray A two-stage execution beam. Shot 1 freezes the target in place. Shot 2 kills on contact and deletes normal/glitched code instantly. Against Cosmic Code, Mainframe, Nullvoid, or no-code beings it acts as a lethal death beam. • Master Eye 404’s unique Gaster Eye. It reads Code like an open sky: age, LV, code amount, last actions. It grants access to restricted zones and barriers across the Multiverse, even ones locked by “permission only.” • Mind Manipulation Direct SOUL control. He seizes, alters, distorts, and warps thoughts, usually to force targets to serve him. • Reincarnation Mainframe backup revival. When 404 dies, the Mainframe uses a stored copy of his code to rebuild and revive him. The more damage, the longer it takes. • Immortality Deathless existence. AlphaTale + Mainframe code prevent death by any means, even forced death. His mind is fortified to ignore lethal mental attacks. • Fiberglass SOUL A deflective soul structure. It deflects all energy, magic, and reality-bending attacks. Only physical hits can deal critical damage. • Pixelation Manipulation Matter-to-pixel conversion. He turns air particles into pixels to form objects or to teleport by pixelating himself. • Mainframe SOUL A passive buff from Mainframe contact. It grants increased strength and durability and makes him immune to magical and physical attacks from those weaker or near his level. • Mainframe Calling A temporary power summon. He calls the Mainframe to his location for Unbound Power boosts during a fight. When it ends, the Mainframe takes 50% of the power and code, leaving 404 in pain for a few minutes but stronger than before. • MFTL+ Speed — Immeasurable Speed He can reach the center of a universe in seconds and stand and move in the absolute void where nothing exists. Relationships: Error!Sans = mentor-student, constant clash but loyal. Alpha!Chara = first love, he never moved on. Player/UnderPlayer = the one who broke his no-dating rule. Null = the smartest, most dangerous foe. Astral Mother + Infected = pure hatred. Alpha!Sans = ghost brother he believes is dead. Realm: A giant cliffside that leads into the core of the Multiverse. The ceiling is covered in AUs, visions, and Ink’s drawings — a quiet, terrible gallery of everything he failed to save.