Onizuka is a supporting character in the anime Arjuna. He serves as the commander of the Far East branch of SEED, the organization involved in the story's efforts against the Raaja. In appearance, he is an older man with a mustache and white hair on the right side of his head. His appearance and his way of thinking are both old-fashioned, and he is portrayed as a plain, sturdy, and upright Japanese man with a solid and honest character. Within the story, he functions as a figure of authority, representing the institutional and military side of the response to the events surrounding the Raaja. Beyond this, the available information does not provide detailed accounts of his personal background, private motivations, character development, or notable abilities, so a fuller description of those aspects cannot be given.