Toni Monetti was the daughter of a former U.S. Senator from New Jersey. Around the time she turned sixteen, Toni's skin gained a silver sheen to it. At a pool party for her sixteenth birthday, Toni was mysteriously teleported away.Toni, along with a few other teens, learned that they were half-alien, and their mothers were impregnated by an alien race called the H'San Natall years ago. The teens were part of a sleeper agent program created by the H'San Natall to defeat the super-powered beings already on Earth. The group of teens stayed together, and with the funding of Loren Jupiter, became the newest incarnation of the Teen Titans. Toni's ability to control bursts of silver plasma energy earned her the codename, Argent.