Muska is a duplicitous, cunning and manipulative individual who will turn on his allies once he has used them to attain his goals. When almost all of the human-made structures on Laputa fall into the sea, Muska can be seen falling along with many of the Laputan robots. She then takes the crystal back from him and escapes. Muska and his agents pursue her and, not long after, Sheeta is recaptured just outside the mining town of Slag Ravine, along with the boy, Pazu, who saved her.
At first, he seems to treat Sheeta well, offering her fine clothes and acting somewhat kindly toward her.
Whatever the case, Muska's madness and reign of terror ended with his life. His design is similar to that of David in Katushiro Otomo's As a descendant of Laputa's royal line, Colonel Muska believes that he is entitled to rule Laputa and use it as a powerful weapon to bring the Earth under his control. It is also revealed that he is biologically related to Sheeta and a descendant of the royal line of Laputa, as his full name is Romska Palo Ul Laputa. He is armed with what seems to be a Webley Mk VI revolver. She then takes the crystal back from him and escapes. He wears tinted glasses, a brown suit, a white shirt and a pale yellow cravat. He was voiced by Minori Terada in Japanese, Jeff Winkless in the Streamline En… Muska gives them one minute, but the pair use the crystal and a spell to destroy Laputa. His goal is to seize control of Laputa's superior technological power by using the Aetherium crystal. When Dola and her gang attack the airship in hopes of taking the crystal for themselves, Sheeta takes advantage of the confusion and knocks out Muska by hitting him over the head with a bottle. At first, he seems to treat Sheeta well, offering her fine clothes and acting somewhat kindly toward her. Muska has light brown hair and hazel eyes. The next morning, Sheeta remembers a spell her grandmother taught her, and ends up activating her crystal. Colonel Muska is a government special agent and the main antagonist of the movie Laputa: Castle in the Sky. Muska, however, insists that Laputa's power is mankind's shared dream, and demands that she hand over the crystal. When Muska corners her, Sheeta states that a king without compassion such as Muska does not deserve a kingdom and that, because of this, he will never truly possess the crystal. When Dola and her gang attack the airship, hoping to seize Sheeta's mysterious crystal for themselves, Sheeta takes advantage of the confusion and smashes a wine bottle over Muska's head, rendering him unconscious. He angrily demands that she tell him the words she used, but the Laputian robot, summoned by Sheeta's spell, intervenes, allowing Sheeta to reunite with Pazu - now working with Dola's gang - and escape, though she loses her crystal in the chaos.
While the army is busy hoarding the castle's treasures, Muska and his agents recapture Sheeta and head for the center of the kingdom, where all of Laputa's technology is held and controlled. He then tells Sheeta that they will be alone together for a long time, hinting that he plans to use her to restart the Laputian royal family.
At first, Muska seems to be working for the government in cooperation with its army, but ultimately, he proves that he is only interested in seizing Laputa for himself. Unlike Dola and her gang, Muska is uninterested in the treasures of Laputa during his search; his only goal is to find the island for the power it will give him for his conquest. Muska also betrays General Muoro and the army, then even the other government agents when he no longer needs their assistance. Muska has taken her volucite/aetherium crystal necklace. The light of Sheeta's crystal, combined with that of the giant Aetherium crystal in the roots of Laputa's giant tree, blinds Muska, and he stumbles away as Laputa begins to fall apart.
Muska has a brown hair and black eyes he wear a glass and brown suit and white scarf and brown pants. The crystal recognizes Muska as a threat under Sheeta's protection spell, shocking him when he tries to touch it. The pair are taken to the coastal fortification Tedus, where Muska shows Sheeta a deactivated Laputian robot, explaining that the government has put him in charge of finding the kingdom of Laputa, and attempts to persuade her to tell him how to locate it. When almost all of the human-made structures on Laputa fall into the sea, Muska can be seen falling along with many of the Laputan robots.