TB-50A, simply known as A, is a TV droid unit who serves as a helper to the main protagonist, Dexter Makita. He is known to be very loud, energetic, comical, goofy, friendly, cheerful, and naiveless. A is aware of creating Mobius2 and, like his friend TB-51B or simply B, only desires for humanity's comfort and security. However, both ended up having a bitter argument once the world's complete because B is forcing everyone to stay in Mobius2 and forget the real world, which A points out that they can die of starvation in the real world should they not wake up. B was still concerned about others desires and refuses to let them free. A, enraged by B's method of thinking, bailed on him to help out the Going-Home Club. Though loud and obnoxious, he wastes no time in thinking logically and puts his feelings aside for others so that they can return home.