His file only says that he could alter his own physical makeup. Limiting factors such as consent, proximity or physical contact might still exist even if they're not explicitly mentioned in his file, but I'd wager his powers work more like yours. You can see cells and freely manipulate them in others. He could see Liminal powers and freely manipulate them in himself.

I'll block off Thursday then. Ernestine also mentioned the town locksmith is a Liminal. Buck Peebles, flying powers.