K'derek, a Tarong of the male persuasion, served the Alliance to Restore the Republic as an information gatherer alongside his sibling, Sk'rirak. Unlike his more jovial kin, K'derek's demeanor was somber, a consequence of observing torture, interrogations, and killings during his time infiltrating an Imperial garrison as a spy. Driven by a solemn promise to fight against the Empire, K'derek developed extensive knowledge of explosives.