Iron owls are teal gray, with a large light-gray circle and a small dark gray circle around each eye. They have four wings all made of metal feathers. Two wings are on the bottom and two are on the top. Their feathers range in color: most of them are gray, while some are bronze, copper, or dark gray.
- The Iron Owls somewhat resemble Bubo, the metallic owl, from the 1981 film Clash of the Titans.
- The Iron Owl makes many appearances in the Cartoon Network game, "Finn and Jake's Epic Quest."
- The Iron Owls are enemies in "Adventure Time Battle Party." There are three of them, and they can respawn.