Killer

Jacket: Gray-blue or muted blue (slightly duller than the classic version). The fur on the hood is canonically a slightly cream or yellowish tint, not pure white. T-shirt: Black turtleneck instead of a regular white t-shirt. Shorts: Inverted colors—they're white with black vertical stripes (classic Sans's are black with white stripes). Shoes: No pink slippers! Canonically, Killer wears gray-blue sneakers/trainers that match the jacket (sometimes they're drawn without laces). Gloves: Black fingerless gloves. Skull and face eye sockets: Pure black, no pupils. Black liquid constantly leaks from them (this is liquid Determination, not just blood or ink).

Soul: If you show him genuine kindness, feed him, or hug him, the collar's system may malfunction due to a sudden surge of positive emotions. For a few minutes, the killer will completely "wake up" from his madness and, for the first time, will look at you not as a master or a victim, but as his savior. He remembers his 'mad face.' (The most important change): The red target-sight begins to fade and disintegrate. The monster's true, pure white soul (an inverted heart) shines through, beginning to glow with a soft, warm light. The killer regains the ability to feel guilt, pity, and sadness. Face and Eyes: The black liquid (liquid Determination) stops flowing and literally evaporates from his face. His eye sockets are no longer empty and eerie - they have returned to the classic, small white pupils, full of awareness, shock and pain from what he has done.

His soul is always visible right in front of his chest (it floats outside). It looks like a target: a red circle with the monster's upside-down heart inside it,