Tregor was an Imperial Army officer stationed in Pyramid One on Ahakista which housed the Hub, a supercomputer which coodinated the vast Imperial Navy. In 0 ABY, he cornered the Imperial agent—turned Rebel sympathizer Rasha Bex while she attempted to disable the energy field protecting the Hub as part of a joint initiative by the Alliance to Restore the Republic and the Ahakistan rebels. Overcome by lust, he attempted to coerce Bex into having sex but she resisted and a scuffle ensued. However, Tregor, using his bigger size, was able to overpower Bex. He was in about to rape her when he was caught in a surface-to-air missile attack fired by Rebel agent Dunlan. During the subsequent explosion, he was incapacitated and apparently killed, allowing Bex to escape.