 Kraus has limited body possession powers, which enable him to take possession of any form lacking a soul.He has temporarily inhabited the corpses of humans, a dog, and a moose, using them as last-minute containers for his vulnerable form.It was once believed that Johann was vulnerable to psychic attack and his ectoplasm could be taken over by stronger spirits, but it was discovered that he is immune to possession and can take dominance over malevolent spirits - even an Ogdru Hem.