Rule 34 Dev - drill drill_arm drill_nose machine male not_furry redux simple_background solo standing tank_treads treads white_background yamato1 adventures_of_sonic_the_hedgehog sega sonic_the_hedgehog_(series) grounder_(adventures_of_sonic_the_hedgehog) badnik grounder_(badnik) robot black_and_white monochrome sketch|2358499220