Kassandra

Kassandra is one of President Obama's Pets who was assigned to help New U.S. Army Commander #10 Jackie Chan assassinate Top Ten Twitter Villain, Esperanza.

Synopsis
Kassandra is first seen when Jackie Chan goes to a fast food joint to recruit her. Instead of asking her, Chan orders her to go with him because she's his Pet. Kassandra immediately refuses because she belongs to no man. Chan challenges her to a duel and if he won she'd become his pet. If she won then he'd become her pet. Kassandra ended up winning and Chan becomes her pet, meaning he cannot continue his original mission of chasing Esperanza.

Trivia

 * Even though it wasn't shown, Kassandra can breathe fire thanks to the DNA Transfusion without having to transform. Her transformation is a dragon.
 * Kassandra's transformation is the only transformation based off a legendary creature. All the others are normal animals.