here is Rubie 12 Nik Frix, Jack's half brother, he was with rubie squad but was assigned to the battle of hoth. he ran into the empire on his way they offered him 20,000 credits to kill all the rubie squad after they crash, they give him a briefcase filled with thermal detonators . He is known as The Black Rubie. He bombs his y-wing so no one can escape.