Some of them are already back, they don't pop up saying you received them but they appear all the same, just attempt them and then check them in Preferences. I got ghost lupe, kasuku lu, and shoyu rough yesterday. No idea if the equip your pet avatars are back though.
My guess is once they fix the other major bugs that are out there. Tried to equip a Dark nova for the avatar, still no go. Once I get that avatar I will let you know joe so that you can test it with the big guns.
There are many ways to obtain this avatar: Lose with or against a Lupe in a 2-player fight in the Battledome; lose with a Lupe against the Ghost Lupe in a 1-player fight; or lose to Balthazar in a 1-player fight with any species of pet.
the one im talking about you have to lose. ive beaten him before but still no avvy. i know its glitchy for me though