Jesse McCartney is an American actor and singer-songwriter. He 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 Law & Order: SVU, Summerland, and Greek. McCartney also is known for lending his voice as Theodore in Alvin and the Chipmunks (2007), Alvin and the Chipmunks: The Squeakquel (2009), Alvin and the Chipmunks: Chipwrecked, Alvin and the Chipmunks: The Road Chip (2015) as well as voicing JoJo McDodd in Horton Hears a Who! (2008), Robin/Nightwing in Young Justice, and Roxas and Ventus in the video game series Kingdom Hearts developed by Square Enix.

Adam "JR" Chandler Jr. is a fictional character from the ABC and The Online Network daytime drama All My Children. He was portrayed by Jacob Young from 2003 to 2011, prior to Ryan Bittle taking over the role in 2013. Bittle was cast as the new JR on Prospect Park's continuation of All My Children.