Jesse McCartney (born April 9, 1987) is an American singer-songwriter, actor and voice actor. McCartney achieved fame in the late 1990s on the daytime drama All My Children as JR Chandler. He later joined boy band Dream Street, and eventually branched out into a solo musical career. Additionally, McCartney has appeared on shows such as Summerland and Greek. He also appears in the video game Kingdom Hearts II as Roxas.
McCartney also voiced Theodore in the 2007 film Alvin and the Chipmunks and the 2009 film Alvin and the Chipmunks: The Squeakquel, and will voiced Theodore in Alvin and the Chipmunks: Chip-Wrecked. He also voices Robin in the Young Justice series.
Jesse McCartney confirmed in early February 2011 via twitter and on the website Perezhilton.com that he will have a major role on the new Fox pilot "Locke and Key". McCartney is currently in Pittsburgh filming the show.