Rowlet is a small, avian Pokémon resembling a young owl with a round body and short legs. Its plumage is primarily brown with a white underside and facial disc. The facial disc itself is in the shape of two overlapping circles. It has large black eyes and stubby beak. The top part of its beak is white, while the lower half is an orange-brown. Its feet have two forward-facing toes and one backward facing toe; they are the same color as the lower half of its beak. Two leaves sprout form its chest, arranged so that they resemble a bowtie. Additional leaves line the undersides of its wings and form its tail.
A nocturnal Pokémon, it stores energy during the day through photosynthesis. It approaches opponents by silently gliding, before unleashing a volley of kicks. This Pokémon is able to rotate its head almost 180 degrees, and has excellent night vision.