A lanky, bucktoothed horse with red hair and a green fedora, Hoof is possibly the least intelligent of the three. Hoof is apparently a mute because he never says a single word in either of the episodes he appears in, apart from the occasional grunt (however, he had several lines of dialogue in the comic book adaptation).
Slightly smarter than Hoof is Mouth, a ram wearing a red bow tie and a driving cap. Whereas Hoof is eternally silent, Mouth, conversely, has an apparent speech impediment which makes him talk very rapidly and repeat almost everything he says. He is the smallest of the trio, yet still bigger than Darkwing Duck as seen during his confrontation with him aboard Taurus' airship.