Erich

A ghost piloting a human body that is not his own.

Bound not only to solve the mystery of his own untimely death, but find the soul whose body he is trapped in so that both of them can move on in peace.

Passive and weak-minded; prone to fright despite often coming into contact with all manner of spirit. 

Design note - shadowing over eyes isn't an actual mark/pigmentation; he just always has shadowing over his eyes