Aris Boch is a galactic bounty hunter who often worked for the Goa'uld in bringing in those on their Most Wanted lists. He was introduced in the episode, 3.07 "Deadman Switch".
SG-1 encountered Aris Boch by accident on a planet on which Aris had been tracking down a Tok'ra named Korra. Aris thought that Korra was just another Goa'uld (named Kel'tar), but soon found out that there was a difference between Tok'ra and Goa'uld.
Aris' race of humanoids (they bleed green blood) are immune to Goa'uld blending. The Goa'uld have nearly wiped out the race through the use of a drug called roshna which made them subservient. Over the generations, the race needs the drug to stay alive.
Interaction with SG-1 and Korra made Aris realize that there was indeed a difference between the Goa'uld and Tok'ra. He was especially swayed when Korra attempted to kill himself with a poison capsule so that he would not be put into Sokar's hands and forced to identify other Tok'ra working secretly in Sokar's ranks. Since he had already contacted Sokar, Aris was forced to take in a bounty. Teal'c volunteered to go in Korra's place. This action swayed Aris even more. He hated the Goa'uld just as much as the Tau'ri and Tok'ra.
In order to cover his tracks and allow all of his captives to go free, Aris decided to destroy his ship after reporting "technical difficulties" to Sokar. He and Teal'c used escape pods and the group went their separate ways to escape Sokar's patrols which were on their way in a mothership.
Before they parted company, Aris gave Carter a sample of the roshna with the hope that one day a cure can be found for his race so that they will no longer be dependent upon the Goa'uld.
--DeeKayP 16:21, 24 Apr 2005 (PDT)