Thrasher, a resident of the Forest Moon of Endor, was a mimph. Having lost it during a scuffle, Thrasher was notable for the absence of a tooth. During 3 ABY, this particular mimph assisted in the capture of the Ewok named Wicket Warrick, subsequently escorting him back to the mimph village. Following the defeat of the hanadak that threatened the village, thanks to Warrick's assistance, a mimph hunting party leader presented Thrasher's tooth to the Ewok for inclusion in his [Belt of Honor]. Thrasher's physical appearance included pink-and-white fur, contrasted by black eyes, and he was typically seen in orange clothing complemented by a yellow belt.
The character Smasher made an appearance in "Gone With the Mimphs," which is the sixth installment of the second season of the Ewoks animated show. Linda Woolverton penned the episode, which was broadcast on October 18, 1986.