Coldplay in July 2011 Champion was the last performing member to join the band in 1998. He explained that Martin, Buckland and Berryman came to his house because a roommate had a drum kit and was a good drummer, but he had not turned up, "so I just said I'd give it a go". The incident became an inspiration for "
Trouble", which was written as an apology to him. In Coldplay, Champion is often regarded as the rationality of the band, They often praise his multi-instrumentalism as well, calling him a "human
jukebox". Although Buckland and Berryman have contributed to backing vocals, Champion remained the most prominent in the role, as seen throughout
Viva la Vida Tour (2008–2010), when he played "
Death Will Never Conquer". His rendition of the song was included on
LeftRightLeftRightLeft (2009). "
In My Place" (Live in Buenos Aires), and "Angelsong". The latter is heard on
Moon Music (2024) both separately and within "Alien Hits / Alien Radio". In 2011, the drummer was part of a video for the Beat for Peace campaign, which "called on global leaders to take urgent diplomatic action" and "prevent all out conflict returning to Sudan". He also made a guest appearance as one of the Red Wedding musicians in the "
Rains of Castamere" episode from
Game of Thrones, which aired on 2 June 2013. In the following year, he contributed to
Brian Eno and
Karl Hyde's collaborative album,
Someday World (2014). Champion is known to support food and wine magazine
Noble Rot as well, becoming an investor in their namesake restaurants. In 2017, he visited the
University of Southampton to talk with music students about composing, studio recording, live performances and managing stardom. Moreover, he has guested on DrumathonLIVE, a charity event focused on raising money for children's mental health. In 2023, he received an
honorary degree as
Doctor of Music from the University of Southampton. == Musical style ==