Etahy was seen by the M.A.L.P. sent to Kar'tek by the Tau'ri and it was because of his unique phase shifting ability that they decided to come to the planet. Etahy soon met with SG-1, but the group were attacked by Mars' Jaffa and only Etahy and Daniel Jackson were able to escape. Etahy took Daniel to meet with the Volca's hero, Ulysses, who gave Daniel a piece of phase shifting technology which worked in the same way as the Volca's natural ability. The duo were then able to attack Mars and his contingent of Jaffa, freeing both SG-1 and a number of Volca. It was during this attack that Etahy phased his hand into Mars' Mar'kak host, supposedly killing him; what none knew was that Mars' symbiote had in fact survived.