Sergeant O'Fera is a slender, female saluki dog who wears a yellow pilot's suit with a red collar, a red chest pocket on the right, with a red armband bearing a crossbone symbol and a red belt. She also wears brown open finger gloves and calf-high high-heeled boots, and a red garrison cap. She has long ears resembling twintails and a long snout. A patch of forelock stick out from her hat. Her facial expression shows that she’s a serious, no-nonsense leader of the Howling Aces.