The Ewoks are involved in a large portion of the final installment in Lucas' original Star Wars trilogy. When the Empire begins operations on the moon of Endor, prior to the events depicted in the film, it ignores the primitive Ewoks. Princess Leia, part of a Rebel strike team, then befriends the Ewok Wicket W. Warrick, a scout from Bright Tree village, and is taken to meet the other Ewoks. The Ewoks capture Han Solo, Chewbacca, Luke and the droids in a trap, and take them back to the village. As Ewoks are a carnivorous race that considers humanoid flesh a delicacy, they prepare fires in anticipation of eating Han, Luke and Chewbacca to absorb their power.
The Ewoks worship the protocol droid C-3PO, thinking he is a god due to his shininess and gold coverings and a later display of power arranged by Luke Skywalker through the Force. C-3PO tells the Council of Elders the adventures of the rebel heroes Skywalker, Princess Leia, and Han Solo. The Ewoks accept the Rebels into their tribe and ally themselves to their cause. They then help in the ground battle to destroy the Imperial shield generator on the forest floor, and their primitive weapons fell the Imperial Stormtroopers and the AT-ST walkers of the Empire. This assistance paves the way to victory at the Battle of Endor. Later that night, the Ewoks are shown holding a huge celebration.
Ewoks speak their native language of Ewokese, a fictional language created for the film. This language is understood by C-3PO, but not the humans, in the film.
The word Ewok is not mentioned anywhere in the film, nor are any individuals referred to by name, except in the end titles, where names of the more prominent characters (Wicket, Paploo, Teebo, Logray and Chirpa) are shown, while the others are just listed as Ewoks.