Susumu Hori (ホリ・ススム Hori Susumu) is the main character from the Mr. Driller series. Susumu is a kind and courageous 14 years old Driller that lives in a round house in Edogawa, Tokyo. He is the highest ranked Driller in the world. He was born in March 3. His blood type is O. Susumu is the son of Taizo Hori and Masuyo Tobi, and brother of Ataru Hori and Taiyo Tobi. He has a talking dog called Puchi.
Susumu Hori appears as a guest character in the Namco Motorcycle racing game, Moto GP 3, where he is an unlockable character and he even has his own bike.