every piece of advice I see on this site for getting "fandom" tattoos is useless. "wait two years" "wait until the show has ended" right so wait until you're not invested and you don't care and you're not as excited to get the tattoo? nobody's listening to this.
the real advice. is to make sure the tattoo is a piece of art that you will enjoy having on your body even if you lose your connection to the media that inspired it. it should be meaningful or beautiful to you on its own merit, and not just because of the connection to the thing.
this is the same advice I give to people who want matching tattoos with another person.
I have two "fandom" tattoos for pieces of media I'm no longer invested in and a matching tattoo with my ex wife. I still love all my tats, because they're good pieces of art that I enjoy having on my body, even seperated from their original context.
do not get a tattoo of an actor's face or a highly recognisable symbol unless you've really come to terms with the fact that someone involved in your chosen property may be outed as a predator or other vile asshole later on.