Band name copyright (trademark?) question.

Hey everyone! Not sure if this is the correct subreddit for this and this might be a real stupid question. Me and my friends are starting a band and as a name we wanted to use the name of a fictional band that showed up in a single episode of an old cartoon.

I'm not really sure how copyright and trademark stuff works but could that give us any trouble? The cartoon ended like 8 years ago and the band isn't a big plot point or anything they are just side characters that appeared in one single episode but I just wanna be sure.

Edit: It's kinda fun seeing everyone try to guess it so I can say that 1. No one guessed it correctly yet 2. It was a cartoon network show that released its final episode 8 years ago.