That could be anyone.
We're talking about Stardusts, Stars, Shooting Stars, Novas, and Quasars, with each one of us acting as a certain group's supporter/counselor/advisor. Nico has the Stardusts, Tina has the Quasars (which at the current state there are none to date), and I have the Stars. Novas and Shooting Stars are the two left open.