Meet one of my former D&D characters: Kronos, master of space and time (chronurgy wizard), accidentally turned himself into a grung while experimenting on frog familiars. Jokes that he is his own familiar now. Also has a frog familiar. Claims it is himself from another timeline. Campaign goal: to recover his lost powers. Secret: is delusional, or is he?
Yes, well, timeline shenanigans. ;)