Nick Jonas is an American singer who portrayed the role of Marius in the 25th Anniversary Concert. He also portrayed Gavroche in 2003. He is best known as one of the Jonas Brothers, a pop-rock band he formed with his brothers Joe and Kevin Jonas. He previously starred in the Disney Channel original series JONAS L.A. as Nick Lucas, alongside his brothers. He also starred in the Disney Channel original movie Camp Rock and Camp Rock 2: The Final Jam. He formed the band Nick Jonas and the Administration, which released its first album in 2010.