So without having the full game, my question is this. Is there anything stopping me building a npc villain as a hero mechanically? or a npc hero as a villain? in superhero fiction its very common for heroes to fight each other, if i wanted to do that as a gm should I be building the npc heroes as full heroes? villains? lieutentants?
Is there any mechanical reason why you should choose one particular option? Is there anything in the book which talks about why the decision was made design wise to build heroes and villains differently?
just trying to get my head around how i should be representing different npcs in game.