Ryuko Tsuchikawa operates as the pro hero Pixie-Bob, a core member of the Wild, Wild Pussycats. She has long blonde hair, swept back with bangs framing her face, and blue eyes. Her light blue hero costume features the team's signature elements: a tinted visor, paw-like gloves, and two blue dots on her cheeks. This costume was later redesigned while preserving its core elements. Her civilian height is 167 cm. Pixie-Bob exhibits a hyperactive, energetic, and loud personality, displaying little concern for others' perceptions. She is notably self-conscious about her age, frequently insisting she is "eighteen at heart" and reacting with impatience to the subject. This impatience extends to her personal life, where she feels a sense of urgency to find love. Despite her exuberance, she can communicate with clarity when necessary and has shown empathy, such as when discussing Kota Izumi's past. She holds a fondness for promising young heroes like Izuku Midoriya, Tenya Iida, Shoto Todoroki, and Katsuki Bakugo. Her combat proficiency is augmented by her Quirk, Earth Flow, which allows her to manipulate earth and create massive, golem-like constructs called Earth Beasts. These constructs are not natural animals, granting them immunity to Quirks that affect only living creatures. Her capabilities are reflected in her stats: power and technique are high, speed and intelligence are average, and cooperativeness is exceptional. She is also skilled in cooking, often preparing large meals for hero students during training camps. Pixie-Bob first appeared during the Forest Training Camp Arc, where she and her team supervised Class 1-A's training. She initiated the session by using her Quirk to transport the students into the Forest of Magic Beasts. When villains attacked the camp, Magne identified her as the most dangerous member of the Pussycats due to her Quirk and knocked her unconscious. After recovering, she resumed her hero work. She participated in subsequent conflicts, including the Paranormal Liberation War and the Final War, aiding in large-scale battles against villain forces. Her Quirk was utilized to counter hazardous abilities like Decay and Double, and she provided both combat and strategic support to other heroes. She works closely with her teammates, including Mandalay, whose calmer demeanor contrasts with her own hyperactivity. Her other teammates, Tiger and Ragdoll, share strong bonds; Tiger became enraged when she was assaulted, and Ragdoll remained supportive despite losing her Quirk. Their interactions often highlight her energetic nature within their collective teamwork. Her birthday is June 26, her blood type is AB, and her hero name is derived from the Pixie-bob cat breed. The kanji in her name mean "earth," "river," and "flow," reflecting the nature of her Quirk. She is known for her catchphrase and enthusiastic introductions performed with her team.