Couldn't PB help fix Ice King?
Dunno if it's been brought up already as I watch this show pretty sporadically, but why doesn't Marceline, Finn & Jake, or especially Betty get help from Princes Bubblegum regarding Simon's condition? I mean, she cured death, for godsakes, so fixing insanity should be a cakewalk.
You'd think it'd actually be in her better interest to cure his insanity, than to keep having him kidnap her. Though I'll grant he hasn't done that in awhile.
Or maybe this had been explained already?
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My sources are all made up from my mind