Colonel Muska was a human colonel and the main antagonist of the film Castle in the Sky. He is a colonel whose goal is to take over Laputa using the largest aetherium crystal. It is also revealed that he is biologically related to Sheeta, as his full name is Romuska Palo Ul Laputa ("Ul" meaning "ruler" in Laputian). He was voiced by Minori Terada in Japanese and Mark Hamill in English Version.
Muska has a brown hair and black eyes he wear a glass and brown suit and white scarf and brown pants.
In the beginning he is seen with Sheeta, and with his men when Dola and her gang attacked the airship. He was knocked out by Sheeta with a glass bottle, and she retakes her aetherium ("volucite" in the original Japanese) crystal necklace. His true nature is shown as a Con Man, and a Determined Man.