He appears to be an average scrawny man with brown hair and silver eyes. He wears dark-rimmed glasses and the commander uniform. Helper T Cell manifests an intellectual disposition, despite often having scraps of sweets stuck in his face. He seems to have a rivalry with Killer T Cell ever since he and Killer T were Naive T Cells. His tasks are strategy planning for dealing with foreign invaders/substances and assisting other white blood cells in immunologic processes.