Tsukutsun, a teenage martial artist from an extraterrestrial lineage, lives with his parents Tsuruten and Tsuntsunodanoteiyugo and older sister Tsururin. After crash-landing in Penguin Village, the family assimilates into the community, bonding with locals like Arale Norimaki. Though Tsukutsun insists he’s the “normal” one, his sister mocks his bizarre tendency to transform into a tiger upon touching females—reverting via male contact—a reaction bypassed by Arale’s android physiology. Diligent and sociable, Tsukutsun navigates occasional family frustrations while clinging to his self-image as ordinary, despite his tiger-shifting quirk and alien roots. His romance with Akane Kimidori evolves into eventual marriage. Trained in the parody combat style Hokuto Shinken, Tsukutsun displays his skills in *Dr. Slump* and *The City of Dreams, Mechapolis*. Though typically weaker than Arale and Gatchan, his fury unleashes surges of power: muscles bulging and hair spiking as he overpowers foes like the Teapot Genie. Cameos in *Dragon Ball*’s General Blue Saga and *Dragon Ball Super* highlight his kung fu ambitions and humorous haircut. The *Dr. Slump* remake adjusts his transformation rules to require male-triggered reversion—unseen onscreen. His family’s signature broken syntax underscores his oddball charm. Across franchises, Tsukutsun serves as a loyal ally, merging martial discipline with comedic flair amid Penguin Village’s chaos and beyond.