I'm in the middle of working on a Hero conversion of a setting in which nearly everyone important to the campaign has a non-powered identity and a powered, costumed identity. In some cases incantations are used to switch form, but in other cases it is completely involuntary (the "other self" appears when it is needed and only when it is needed -- the character in question is going to be an NPC). The problem is that I've never mastered how Multiform works in character generation, although I know the game effect I'm looking for.
Balancing points for NPCs is not that significant, but the project will feature several playable characters and balancing them out looks like it'll take some work.
Suggestions?