User blog comment:Mathias Custos/Could there be a fourth?/@comment-3146930-20131221140004/@comment-3146930-20131221145002

That doesn't make any sense. Sun is from a different school, if he is from a school at all, as he wouldn't stow away on a ship if his school would be sending their students anyway. Penny isn't even enrolled in a school based on the way her handler doesn't even want her in the world.

Penny on the other hand is a student at Beacon, so she must have been in the initiation with the others, found a teammate, collected a chess piece, and formed a four person team at Beacon