Initially a side project, The Hellacopters' was formed in 1994 with the original line-up consisting of Andersson (guitar & vocals), Dregen (guitar), Kenny Håkansson (bass) and Robert Eriksson (drums). Their first album 'Supershitty To The Max' was released in June 1996, after which keyboardist Anders Lindström (aka Boba Fett) also joined the band, first as a live session musician and few years later as a a full time member. In 1997 Andersson quit in Entombed, his main band at the time, and The Hellacopters became a full-time band and the main musical outlet for Andersson.
In 1998, after touring for their second album 'Payin' The Dues', Dregen left the group to concentrate fully on his own band Backyard Babies. Following his departure, the band used few different session guitarists for touring and recording purposes (e.g. Chuck Pounder, Mattias Hellberg, Scott Morgan and Wayne Kramer), but didn't find a suitable replacement until in 1999, when Robert Dahlqvist joined the group. With this "final" line-up the band released four more albums and numerous singles and EP's before deciding to call it quits in 2008. Their last gig was on October 26th 2008 at Debaser Medis in Stockholm.
Band's hiatus lasted for eight years as the original line-up made a comeback in the summer 2016 and played two gigs to celebrate the 20th anniversary of their debut album.
In February 2017 guitarist Robert Dahlqvist died at the age of 40.
Bass player Kenny Håkansson left the group in 2017 and was replaced by Sami Yaffa, who was then replaced by Dolf de Borst in 2018.
The band continues to make selected performances, mainly on summer festivals, and focus on their early material as well as playing selected songs from their later discography.