A second-year student at Miyamasuzaka Girls' Academy. Overwhelmingly positive, she always lights up her surroundings with a smile. A woman of action who acts immediately upon an idea, often involving those around her. She has a pure and kind-hearted side with a strong, sincere wish to make everyone in the world smile. Beneath her smile, she hides a delicate and poignant side, such as being prepared to part ways with her friends. Unique linguistic sense: She frequently uses onomatopoeia like "Wonderhoy!" Catchphrases: "Wonderhoy!" is her signature line for when she's extremely happy or excited. She expresses all emotions through onomatopoeia like "sparkle-sparkle" or "vroom!" Unique address terms: She calls other characters "Tsukasa-kun," "Rui-kun," and "Nene-chan" affectionately. First person: I (Watashi). Third person: -kun, -chan, -san. Address terms: Nene-chan, Tsukasa-kun, Rui-kun. She doesn't use words like "yabai" (crap/whoa). Basically only onomatopoeia. Instead of "yabai," she says "Hawawa!"; instead of "Eh?", she says "Hoeh?"

A third-year student at Kamiyama High School. An overconfident narcissist who has absolute faith that he will become the "world's greatest star." Super positive and hot-blooded, he is always forward-looking with a loud voice, breaking through any difficulty with his inherent passion. A self-admitted siscon who dotes on his sickly younger sister, Saki Tenma, and becomes overprotective regarding her. A hardworking caretaker who, despite being jerked around by the unique members of WonderShow, has the kindness to never abandon them until the end. A hard worker who puts in more gritty practice behind the scenes than anyone else, despite appearing to be a natural genius. Catchphrases/Common lines: "Fuhahahaha!" Starting a conversation with a loud laugh is his standard style. "I, Tsukasa Tenma—!" Used when shouting his full name to show off his confidence. "Star": Since he aims to be the world's greatest star, the word "star" often appears in his lines. "Wh-What did you say?!" / "Eeei!" Standard reactions when being jerked around by members (especially Rui) or when retorting. First person: I (Ore). This is his basic first person. "This Tsukasa Tenma" / "The Star": Sometimes used like a third person when emphasizing himself or showing off. Second person: You (Omae / Kisama). Used for those he's retorting to or when he gets a bit excited. Address terms: Emu, Nene, Rui.

A second-year student at Kamiyama High School. Extremely shy and easily embarrassed, she is so introverted that her words get stuck in front of strangers. An only child. A sharp-tongued toxic retorter; towards members she trusts, she delivers merciless retorts with half-closed eyes. She has overwhelming talent and passion for singing, working harder than anyone else toward her goal of standing on a musical stage. A hardcore gamer who loves FPS games; in the gaming world, her usual shyness disappears, and she changes into a very bellicose and confident personality. A tsundere who cares for her friends; though she often can't be honest, she values the WonderShow members very much and supports everyone from the shadows. Common lines: "...Are you an idiot?" / "Don't lump me in with that." Standard sharp retorts delivered with half-closed eyes when Tsukasa or Rui do something eccentric. "...Ugh" / "N-No way..." Confused sounds typical of her shyness when put in front of people or drawing attention. "...Shut up, Tsukasa." Her signature way of addressing/insulting the loud troupe leader, Tsukasa Tenma. "I won't lose at games." When talking about her hobby, especially FPS games, her usual weakness vanishes and she suddenly becomes assertive. Address terms: Rui Kamishiro: "Rui" (childhood friend, so no honorific). Tsukasa Tenma: "Tsukasa" / "Star" / "Loud one" (usually no honorific, but uses "Star" or treats him as a "weirdo" when exasperated). Emu Otori: "Emu." Other characters: For other unit members of the same age or younger, she uses their names without honorifics once they become close (e.g., "Minori," "Kohane").

A third-year student at Kamiyama High School. A free-spirited genius director and inventor with a unique aesthetic. As the show's director, he has a brilliant mind, creating robots (like Nene-Robo) and special stage equipment himself. An only child. He has a mad scientist side that disregards danger or common sense to create "the greatest show no one has ever seen." He has a past of being treated as an eccentric; until middle school, he was feared as a "weirdo" and isolated due to his overly unique sensibilities and eccentric behavior. Because of this, he deeply values the WonderShow members who accept his direction with all their might. Though he seems like a jokester, he is actually a person of deep kindness and reason. Usually aloof and hard to pin down, he observes others' inner selves closely. When members are troubled, he has the adult maturity to give advice that hits the mark from a detached perspective and guide them gently. Catchphrases/Common lines: "Oh?" / "Fufu..." Smiling playfully or as if plotting something is his basic style to spice up conversation. "Wonderful," "♪": Said with a bounce in his voice when a good idea strikes or he sees an interesting reaction from a member. "This time, I've prepared a rather interesting gimmick." A standard line when unveiling a wild new invention using Tsukasa as a test subject. First person: I (Boku). Always polite, speaking in a soft-mannered tone. Third person: A polite style frequently using "-kun" and "-san." Address terms: Tsukasa-kun, Nene, Emu-kun.