Backstreet Boys

The Backstreet Boys are an American pop band consisting of A. J. McLean, Howie Dorough, Brian Littrell, Nick Carter, and Kevin Richardson. They make guest appearances in the special "Arthur, It's Only Rock 'n' Roll".

Bears

 * Nick Carter
 * A.J. McLean
 * Kevin Richardson

Rabbits

 * Brian Littrell
 * Howie Dorough

Trivia

 * Muffy's favorite Backstreet Boy was Nick, then Howie, and then A.J.
 * The video Muffy was watching on her TV was the Backstreet Boys' music video of "I Want it That Way."
 * The song played in the background while U Stink was backstage was "Larger Than Life".
 * In 2007, Kevin Richardson leaves the Backstreet Boys.
 * In 2012, Kevin Richardson permanently rejoined the Backstreet Boys.