Goltas was a slave of Jamil, with Morgiana.

Goltas was one of Jamil's slaves originated from the Kouga Clan. He was one of Jamil's most trustworthy slaves, since Jamil trusted him enough to bring him and Morgiana along for protection in Amons dungeon. He died in that same dungeon, but he was able to save Morgiana.
(Source: Magi Wikia)