Game we're in: Kannagara
Character name: Mayuri Kurotsuchi
Canon: Bleach
Illnesses: N/A
Exceptional physique traits: Many of his organs are fake, left arm is artificial/extension device, has a blade in his ear...
Spiritual powers: He is a death god and a captain of death gods to boot. Immense spiritual pressure that comes off him "in waves"
Escorting ghosts/spirits: Does Nemu count?
Other: I'm sure there is more but I can't think of it right now.