Ko Solok was a Gran male Jedi Master who served the Jedi Order and the Galactic Republic during the Clone Wars. Around the year 20 BBY, Solok was selected to be part of a Jedi task force sent to hunt down the Sith Lord brothers Darth Maul and Savage Opress. The team tracked its targets to the planet Yellowblade's Landing, where the Jedi fought the duo but failed to capture them, losing Master Grohto in the process. Solok then accompanied Masters Bruu Jun-Fan and Plo Koon to the planet Pleem's Nexus, where they engaged the Sith again. Maul killed both Solok and Jun-Fan in the resulting fight, after which both Sith escaped.