Bret Peter Tarrant McKenzie is a New Zealand musician, comedian, music supervisor, and actor. He is best known as one half of musical comedy duo Flight of the Conchords along with Jemaine Clement. In the 2000s, the duo's comedy and music became the basis of a BBC radio series and then an oft-lauded American television series, which aired for two seasons on HBO. Active since 1998, the duo released their most recent comedy special, Live in London, in 2018.

"Man or Muppet" is a song from Walt Disney Pictures' 2011 musical comedy film The Muppets, written by singer-songwriter Bret McKenzie. Performed by the film's main characters, Gary and Walter, the song also features Bill Barretta and Jim Parsons portraying the contrasting identities of Gary and Walter, respectively. The song was released by Walt Disney Records on November 22, 2011, as part of the film's original soundtrack.