His soul is in the center of his body and he has a floating and jawless gaster blaster floating above his head the blaster has a single red glowing eye hes covered in a rainbow covered coat and had 6 wings.The pair at the bottom is those of the grim reaper ending in purple tips and two eyes Bravery and Perseverance the middle pair is demon wings blue and green in color with two eyes again Justice and Integrity the topmost pair is angel wings that are red and with two eyes, Kindness and patience.

Sans from "The thoughts"

Personalities
Kafka:Kind-hearted, selfless, and hardworking. Despite being older than most recruits, he’s humble and often puts others’ safety above his own. 

Reno:Ambitious, loyal, and idealistic. Reno is passionate about becoming stronger to protect others.

Kikoru:Proud, confident, and headstrong. She starts as a competitive prodigy who hates losing, especially to “older rookies” like Kafka.