Tok'ra operative masquerading as a Goa'uld under-lord in the service of Anubis. Khonsu collected vital information regarding where and how Anubis was obtaining his technology. His First Prime was Herak who allowed the operative to believe he did not know the truth. In reality, Herak knew all along, and after SG-1 was captured, the First Prime killed Khonsu to deliver the four to Anubis.
The Other Guys - Khonsu orders the capture of SG-1, but is killed before he can deliver vital information to them.