By “favorite fictional character” I don’t mean “favorite character of your favorite fiction”, consider the media itself to be irrelevant.
Just consider the character itself and how it changes throughout whichever segments of its timeline, regardless of how the world moves around it (unless it’s relevant);
the show / book / comic / game / political campaign itself may be absolute trash, but you love some character from that more than any other character from anything at all.
Like Magnifico from Wish, or the driver from Big Rigs: Over the Road Racing.
Mercutio from Romeo & Juliet is an all-timer. Just a clown who nobody takes seriously, but is liked by everyone. Then while he’s being stupid playing with swords (but trying to patch up a blood feud at the same time) he gets killed, triggering a revenge murder that spirals into the deaths of the teens. Sorry for spoilers.
Sounds like me tbh, being a bit silly and causing trouble for people around me with no ill will
(though
unfortunately I’m still alive)