Vorjak was a male member of the Jaridians species.
On Earth, his wife Lili Marquette gave birth to their daughter who was Human/Jaridian hybrid. This child was believed to be the future for the Jaridian race who were dying due to their out of control metabolism that was burning them up from the inside. He later escaped with his wife from Earth in order to return to Jaridian space. (Episode: Forge of Creation)