Janus Greejatus was a Human male Dark Side Adept, and an advisor to Galactic Emperor Palpatine. From an early age, while growing up on his homeworld of Chommell Minor, Greejatus bore unbridled hatred toward non-Humans, since they had damaged his family's finances severely in years prior. Greejatus and Palpatine became acquainted before either of them entered politics, as young members of the Legislative Youth Program. Entering Chommell Minor politics, Greejatus earned the notice of Palpatine, elected to the position of senator of the Chommell sector in 52 BBY. When Palpatine became Supreme Chancellor of the Galactic Republic, Greejatus succeeded him as senator, but was soon drummed out of the office by influential politicians on Naboo, who disagreed with his closed-border policies.