6) Splinter

Yes, the wizened sensei of the Teenage Mutant Ninja Turtles managed to need a Carol intervention in issue #89 of IDW’s admittedly more grim-dark comic continuity. The ghost of Shredder (yes, really) comes to Splinter to warn him he’s getting too ruthless. So a trio of the animalistic divinities from the Pantheon show Splinter his peaceful past, how his current actions have caused the Turtles to become more fractured in the present, and a future where Splinter is wearing Shredder’s armor and has killed all of the Turtles’ allies, leading his adopted sons to murder their father to stop his reign of tyranny.