Lachichuk was a male Wookiee warrior and a famed hunter from the planet Kashyyyk. In 19 BBY, he served under Captain Merumeru in a volunteer army during the Battle of Kashyyyk in the final year of the galaxy-spanning Clone Wars. When a droid army belonging to the Confederacy of Independent Systems attacked the coastal city of Kachirho, Lachichuk, Merumeru, and dozens of other Wookiees fought on the beachfront alongside Jedi Masters and clone troopers of the Grand Army of the Republic in an effort to resist the assault. After a fierce battle, the Confederate force surrendered, and the war itself ended shortly thereafter.