This Triannon was part of D'Jamat's religious faction who boarded and took control over Enterprise NX-01 in November 2153.
Implanted with an organic explosive, he was ordered by D'Jamat to sacrifice himself to demonstrate what would happen to Enterprise if Captain Archer refused to cooperate. He detonated himself on C Deck, causing a hull breach and killing an Enterprise crewmember. (ENT: "Chosen Realm")
