It has already been well established that Fixed Point will allow Hero Character cards to evade destruction by healing back above 0 HP before Fixed Point leaves play.
What about cards OTHER than Hero Characters? Lots of Hero and Villan Targets have the potential to be healed. Do they also get to stay alive if above 0 when FP leaves? It seems to me that they should, but the prior discussions (that I found) and Spiff's FAQ don't seem to cover this case.
Yes.
Yup, a target is a target - doesn't matter if it's a hero character card, a bot, a villain, they all use the same rules with regard to their hp totals and Fixed Point :).