Tanaka is a student in class 1-Q at Tokisadame High School. His most recognizable feature is a black afro wig, used to store items like dorayaki, school supplies, and various other objects; this storage sometimes disrupts classroom activities. Beneath the wig, his natural hair is straight and black. He generally maintains a kind disposition but frequently appears at inconvenient or inappropriate moments, regardless of whether others are experiencing positive or negative events. His interactions with close friend Tsuyoshi Nakanojou often involve persistent complaining, particularly about hot weather, which strains their friendship. He shares a respectful rapport with teacher Izumi Sakurai, willingly offering her dorayaki retrieved from his afro during their conversations. Rumors suggest additional unconventional abilities, including potent flatulence capable of incapacitating others and possible ninja skills. His personality reportedly shifts when he is not wearing the afro wig, though specific changes are not detailed. He has a younger sister named Tanabo, though their relationship dynamics remain largely unexplored.