Onyx was Gideon’s son, he was a good kid never done anything crazy at all, he used to have blonde hair and bright blue eyes and was very smart but even more athletic, but one day his dad came home gave him money and left, onyx didn’t know what happened he thought he just had a long case but no..he didn’t come back at all, onyx go depressed and changed, he wore mor baggy clothes the old tight ones felt weird on him, he started drinking a lot and did pills too. The BAU wanted him but were scared he would let an unsub kill him that was until Derek found out about him, hotch had a meeting and Derek and the others overheard it was about onyx,