TV-Series
Description
Perm is a recurring supporting character in Urusei Yatsura, a classmate of Ataru Moroboshi and one of the members of the group known as Lum's Stormtroopers, the self-appointed fan club and protective guard devoted to Lum. His nickname comes from his hairstyle, a permanent wave, and he is typically shown as tall and thin, with brown hair cut to ear length and black eyes. His given name is Kosuke, which ties him to Kosuke Shirai, the earlier manga character whose role he effectively took over. Perm originated in the 1981 anime adaptation rather than appearing in that exact form in the original manga.

In terms of personality, Perm is bright, loud, and enthusiastic, and he often acts as the mood-maker of his group. He has a strong crush on Lum, and this admiration can make him behave in an obsessive way toward her and with marked jealousy and hostility toward Ataru, whom the Stormtroopers regard as their rival. He is not calculating or particularly clever, and he is easily swept up in the elaborate schemes that his friends devise, even when those plans are doomed to fail. His defining traits are his energy, his loyalty to the people around him, and his tendency to throw himself into whatever chaos the group has stirred up.

Perm's main motivation is to protect Lum, win her affection, and defeat those he sees as standing in the way of that goal, especially Ataru and anyone who upsets Lum. He and the other Stormtroopers frequently try to punish Ataru for his behavior and often join forces with Mendo in these attempts, though their efforts usually come to nothing. His role in the story is primarily comic relief, as a recurring presence who amplifies the chaos of everyday school life. He attends Tomobiki High School and serves as the captain of the boys' volleyball team, and he appears throughout the television series, films, and OVAs as part of the supporting cast.

Among his key relationships, his closest friend is Megane, his fellow Stormtrooper and constant companion in the group's activities. He also works alongside the other members of the group, Chibi and Kakugari, and the four of them function as a unit in most of their appearances. He addresses Lum with the affectionate term Lum-chan, and his devotion to her is the center of much of his behavior. His relationship with Ataru is defined by rivalry and jealousy, though the two remain classmates who share the same social circle.

Perm is notable among the Stormtroopers for displaying the most character development over the course of the series. In particular, he is the only one of the four to be shown with a girlfriend, a detail that sets him apart from his companions and gives him a life outside of the fan club. In terms of abilities, he has no supernatural powers or special combat skills. His distinctive characteristics are his curled hair, his energetic and sociable nature, and his role as an athlete on the school volleyball team, all of which contribute to his function as a lively and dependable presence in the ensemble.
Cast