Fightstar is a British rock band from London that formed in 2003. The band is composed of lead vocalist, guitarist and keyboardist Charlie Simpson, guitarist and co-vocalist Alex Westaway, bassist Dan Haigh and drummer Omar Abidi. Generally considered a post-hardcore band as a whole, Fightstar are known to incorporate metal, alternative rock and other genres into their sound. Their 2005 debut EP, They Liked You Better When You Were Dead, was released in 2005 and was a critical success.

Charles Robert Simpson is an English singer, songwriter, and musician from Suffolk. He is a member of the BRIT Award winning pop-punk band Busted and he is also lead vocalist and rhythm guitarist in the post-hardcore band Fightstar. AllMusic has noted that Simpson is "perhaps the only pop star to make the convincing transition from fresh-faced boy bander to authentic hard rock frontman". Simpson is a multi-instrumentalist, playing guitar, bass, keyboard, piano and drums.