Custom avatars would be great, as is possible on the forums. But in a game, because some butthead would abuse it by using something stupid, I bet that's one of the reasons why it's not possible. Just imagine you letting your kid(s) play this and they see a picture NSFW.
Of course RULES to protect the innocent who are playing games made to destroy opponents. Have you ever wondered what these Innocents might be thinking of what they would like to do to their parents if they could get away with it without getting revealed.
To be a bad A player you have to think that way but ironically the OVERSEER watches over US ALL and decides who said something THEY don't like. It happened to me when one of my benign posts was read with a pause on the wrong word and sure enough THE MEANING sounded like OVERSEER thought I meant it.
How about a special match between OVERSEERS and UNDERTAKER winner takes on Ricky Star NO HOLDS BARRED!
My AVATAR was entered in a formal art show and WON 1st Prize as " Best Depiction of REALITY" it's called
BiPOLAR_MAN it's not offensive at all unless you don't think MI should be depicted in iMAGES. But DAMN! It's REALLY GOOD! If I can toot my own horn. No double joined jokes because they are already built in to a NO THANG to HIDE TRUTH in advertising.