Human lo'taur to the System Lord Yu. He was shot with a zat'ni'katel by Daniel Jackson, who proceeded to masquerade as Jarren in order to get close to Yu and join him on his trip to the Hasara system for the System Lord summit. A copy of the Reole chemical would make Daniel a chameleon, forcing Yu to believe him to be Jarren.
It is not known if Jarren was killed or his body simply hidden long enough for Daniel to complete his mission.
Summit - While preparing tea for his master, Jarren is stunned by a zat'ni'katel and dragged off by Jacob/Selmak so Daniel can take his place.