Regarding the summoned NPCs and characters changed into Phantom

Players also can't instantiate their own NPCs in the game that change someone's class. NPCs can move around. He could have just bound its location to his player location.

I recall similar things happening to NPCs in the far past where people have forcefully moved them. But hell, with the way this game is, anything is possible with a little tinkering. I don't understand what the point in this would be though, other than just being a little pomegranate head.