i didn’t notice they were gone until this thread but it appears that they are - i haven’t seen anybody with them since the site’s upgrade and don’t see an option for them anywhere, either ;u;
Most non-default avatars flowed smoothly to Xenforo but I had a NSider tribute Goombella avatar and when i signed on when 3.0 was avilable, Goombella was gone and i was stuck with an S and not the no-avatar i wanted if i couldn't have had goombella. So to not make me look like a noob i used my Pokeheroes avatar, this inkling. Unless you hppened to save the default pics (I didn't sadly) They're likely gone unless the mods make a 'avatar database" where they share all the pics (Maybe by type and if too big of a category [like NSider] alphabetially)