Woobat is a blue, spherical Pokémon, resembling a Honduran White Bat. It is covered in shaggy fur and has a large, piggish nose with a heart-shaped nostril. Two tufts of shaggy fur hide its eyes, and its mouth has a single fang in the center of its upper jaw. There are two relatively small, black wings on either side of its body.
Woobat's nose serves various purposes: It uses ultrasonic waves from its nostrils for echolocation, and it can also be used to grip walls as Woobat sleeps, which leaves heart-shaped marks on the walls of caves.
Karl, a character in Zoroark: Master of Illusions, wears a baseball cap with a Woobat depicted on it. As Woobat's official reveal was four days before the movie's release in Japan, the reveal of Karl's design was the first time Woobat's existence was hinted at.
Woobat's evolutionary line seems to have a connection with Zubat's family. All the members of both lines are Bat Pokémon species (excluding Swoobat), live in caves or other dark places, and have no visible eyes at their respective unevolved states; furthermore, members of both lines reach their respective fully-evolved forms by friendship, and both have similar Shiny forms (with green main bodies). Also, Woobat and Zubat have somewhat similar English names, both having rhyming prefixes and bat as a suffix.