Spitfire is a yellow pegasus and a captain of the Wonderbolts, a flying team. Her personality changes from different episodes: In "The Best Night Ever", she's relaxed, and rather open, inviting Rainbow Dash to hang out with the Wonderbolts. In "Wonderbolt Academy", she's much stricter. She gives more orders, shouts more and is much less open than before. Finally, in "Rainbow falls", She's shown as manipulative and sneaky, trying to get Rainbow dash to join the Cloudsdale team and trying to ditch Soarin.

Spitfire's shown in her wonderbolt uniforms at times, but in "Wondrrbolt Academy", she is shown wearing a suit, dozens of badges, a whistle on a red strap and purple sunglasses.

Her cutie mark is a cluster of flames.