Kubota had black frizzy hair which Junpei said resembled a bird's nest. His glasses were oval-shaped.
During the Nonary Game, he wore a pink undershirt with a beige and black waistcoat and a red necktie. The cuffs of his shirt were striped matching pink and white. He had forest-green pants to go with his purple and white socks that stand out from his black-brown combat boots. He wore the bracelet with the number 9 on his left hand.