A normal Driller has the appearance of a mechanical Heartless with a smooth, brown main body with a gold engine on its back. Its short arms are yellow, gold, and navy blue with light blue highlights and attach to conical hands. Both of its hands are yellow and gold and end in large, blue-grey and light blue drills. Its black head and glowing yellow eyes are encased in a small, translucent dome on the top of its body, and it has a curled, black antenna on the top of the dome. There are two red crests on its body, one on either side of its head, and the Heartless emblem is on its chest. It also appears in red and gold enhanced variants.
The Driller's name is a reference to the drills on its arms.
It focuses on ramming its drill arms into the Gummi Ship in order to inflict severe damage.