From Tolkien Gateway
Muzgash by John Howe
GalleryImages of Muzgash

Muzgash was an orc serving in the garrison of the Tower of Cirith Ungol, under the command of Shagrat. He was caught up in fighting with Gorbag's Morgul-orcs in the Tower; with Lagduf, he attempted to escape, but was shot as he ran through the gate.[1]

Portrayal in adaptations

2003: The Lord of the Rings: The Return of the King

Though unidentified, a trio of Uruk-hai are encountered by Samwise Gamgee on the stairs of the tower after the battle. Since only one Uruk (Snaga) was encountered by Sam on the stairs in the novel, it is likely that the other two are meant to be Lagduf and Muzgash.