Go to https://tvtropes.org/
and find tropes that you’ve implemented into the characters that you’ve made, wether intentional or not.
is one of your characters very skilled in their field but still at a young age and has next to no real experience? perhaps you can apply the “Skilled but Naive” trope to them:
was one of your WoM characters dead-set on destroying the Magic Council (or whatever the fuck it was called before it got changed)? then perhaps you can apply the “bomb-throwing anarchist” trope to them:
maybe the character you wanna talk about is just… you. (which is lame but I see why you would do it), then they might be applicable for the “self insert” trope.
Self-Insert Fic - TV Tropes (dunno why there wasn’t a page just for self inserts. i guess this will do.)
I mean, characters have multiple tropes running at once with them. So i’d honestly encourage you to put as much tropes as you can to describe your characters.