Smasher was a mimph residing on the Forest Moon of Endor. In the year 3 ABY, Smasher, along with two other mimphs, under the leadership of Masher, apprehended the Ewok Wicket Wystri Warrick; Smasher played a role in securing him by tightening the ropes used for detainment. Following this, the group escorted Warrick back to their village, where they showcased the Ewok to the other mimphs, who showed great admiration.
After Warrick vanquished a hanadak that posed a threat to the mimph village, the mimphs set him free, and Smasher was there to witness their farewell to him. Smasher's physical appearance included pink-and-white hair, dark eyes, and orange clothing complemented by a yellow belt.
Smasher's appearance occurred in the Ewoks animated series episode entitled "Gone With the Mimphs," which was the sixth episode of its second season. Linda Woolverton penned the episode, which was broadcast on October 18, 1986. The specific identity of Smasher from the capturing party of four mimphs is not clarified within "Gone With the Mimphs."