"

 Flea says he's not an official member 

""To clarify: I am not a member of antemasque. It's omar andCedric's band. I helped out and played a little bass just like I did on Mars Volta""

I think we can assume until further notice that this is the same deal as with the Volta, where the only official members are Cedric and Omar, and the rest are considered collaborators.   "