Antidote is one of Jen 10 aliens. She is an Andosian from planet Kilde. She can shoot glass-encased acid from her hands. She can cause or heal any disease or illiness. She can shape-shift into any form and can detect a living creature's heartbeat more than a mile away. In a straight fight, Antidote is a poor fighter, but she is great for secret missions and backup. It once escaped from her omnitrix and pretended to be Jennifer.