Krel, a Human cyborg of male gender, was employed by the Migrant Merchants' Guild on Coruscant, a planet. His tenure occurred around 3643 BBY. As a scientist, Krel engineered war droids for the Guild, a criminal enterprise, and asserted that he had transformed captured civilians into cyborg sleeper agents. However, the Republic Special Forces Division's Havoc Squad, also known as Havoc Squad, acting under the command of General Garza, brought about the death of this cyborg. Subsequent investigations into Krel's work demonstrated that his claims of creating cyborg sleeper agents were unfounded.