M'zel was the spokesman for the Rebel Jaffa at the Alpha Site when it fell under the attack of Anubis in the episode, 7.16 "Death Knell".
M'zel remained as leader of the Rebel Jaffa after they decided to leave the Alpha Site and strike out on their own. He felt that they needed to define themselves and not depend too greatly on the SGC. Also, the relationship between the Rebel Jaffa and the Tok'ra had become increasingly strained as each side blamed the other for revealing the Alpha Site's location to Anubis. It was never determined how the Site's location was discovered. (7.16 "Death Knell").
M'zel still kept in contact with Teal'c through the SGC.
Later, M'zel arrived on the planet P4S-161 first to discover that every Jaffa was dead, obviously dying where they stood with no signs of a battle. He and Teal'c went to the Alpha Site to see if they could figure out what was happening. The rogue NID agents now working under the name "The Trust" were responsible for the slaughter. They were targeting the planets known to be in the Goa'uld System Lord Ba'al's domain. This targeting included the deployment of a rocket loaded with symbiote poison launched through the stargate. The stargate that The Trust was using was the one they stole from the SGC!
M'zel and Teal'c started their own investigation and decided to 'gate from the Alpha Site to a planet known to have a Tok'ra spy. This planet was designated as P3S-114 and the Tok'ra spy's name was Zarin. She was an underlord to the Goa'uld System Lord Ba'al. While they met, The Trust launched a rocket against them and everyone, including the Tok'ra Zarin and all the Jaffa, died at Teal'c's feet. M'zel's last words to Teal'c were "I die free." Teal'c was the only survivor because he no longer carried a symbiote. (8.10 "Endgame")
--DeeKayP 12:04, 20 Jul 2004 (PDT)