Commander Kelby
Commander Kelby was 22nd century Earth Starfleet engineering officer.
In 2154, he was assigned as the chief engineer of Enterprise, under Captain Jonathan Archer, following the transfer of her former chief engineer, Trip Tucker, to the Columbia. (ENT: "Affliction")
When the Enterprise took aboard three Orion slave girls, Kelby became influenced by their pheromones causing him to make questionable decisions. He became irrational in his behavior, disobeying orders from Tucker. He was confined to quarters, where he was influenced by one of the Orions to perform a dangerous task to keep her. He entered Engineering to destroy the ship, but his attempts were halted by Tucker and the Engineering staff. (ENT: "Bound") It was suspected that he sabotaged a shuttlepod in 2155, but it turned out to be Ensign Masaro. (ENT: "Terra Prime")
Background
Kelby was played by actor Derek Magyar. In "Bound," he wore his regular commander rank insignia, but was addressed by Trip as "lieutenant."
Originally, Kelby was going to be the Terra Prime spy in "Demons" and "Terra Prime," but Manny Coto decided the fans had come to like Kelby too much, so they decided to create Ensign Masaro.
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