Bio: Close confidant of both Chewbacca and Yoda during the Clone Wars. Arranged for Yoda's egress from the Battle of Kashyyyk in the wake of Order 66.
His importance to Wookiee society is somewhat exaggerated in Revenge of the Sith. He technically wasn't in the command structure of the Wookiee army, but instead was a civilian leader—the "Mayor of Kachirho". That said, he did participate in helping form the defensive strategy during the battle with Jedi Generals Luminara Unduli and Quinlan Vos.
The reason? The Battle of Kashyyyk took place in the coastal city of—you guessed it—Kachirho.
After the battle, Chewbacca and he were separated. He was temporarily enslaved by the Empire, and sent to work on the construction of the Death Star—until Chewie managed to rescue him.