Tenna appears as a 3D-rendered humanoid figure with an old TV for a head, lacking any facial features aside from a wide, often-grinning mouth and a long, pointed nose. His attire consists of a flashy red suit with twin coattails, a long yellow tie, black pants, large cartoony white gloves, and bright yellow dress shoes. Tenna is an upbeat and energetic show host who thrives on entertaining his audience by both flattering and challenging his contestants. Beneath his lively persona, however, he is deeply insecure and egotistical, prone to panicking when things don’t go as planned.Now feeling abandoned, Tenna struggles with feelings of worthlessness and loneliness, and fears that he’s no longer interesting and that he’ll be discarded. While Tenna is outwardly patient, he can be driven to vindictiveness as after his falling out with his former business partner Spamton, Tenna includes various amounts of insults or slights at the business man throughout his games or quizzes, at one point urging Susie to kill a model based off of Spamton's head in a bonus mini game or directly blaming Spamton for his inability to use technology.