Ytar Massin

Ytar Massin was a Kozomian sent by the Kozomian Empire, a ally to the Klingon Empire to spy on Starfleet in 2256. He befriended Gerry Lifeson, Sylvia Tilly, Evelyn Savea, Ian Kwon and Keero. Like all of them, he was assigned to the USS Maxwell Forrest. However during his time at Starfleet Academy, he forgot all about his mission, but when he was in a holodeck shooting at Klingons, he started to remember his mission and he turned on Savea, Tilly and Captain Schaefer. However, he was shot multiple times by Schaefer until he could not breathe any more.("The Spy")

Ytar was voiced by George David Hammond.