Johansson was the singer of the hardcore band Totalt Jävla Mörker (a band heavily influenced by
Discharge,
Norwegian Black Metal and
industrial music), which he formed in his hometown Skellefteå in 1997. Johansson recorded and toured as an active member with both Totalt Jävla Mörker and The (International) Noise Conspiracy until 2005, when he left Totalt Jävla Mörker due to lack of time and internal disagreement about the band's future musical direction. In 2003, he formed
Knugen Faller, a punk band where he played guitar and worked as the main songwriter.
Knugen Faller split up in 2005 after two EPs, one LP and several tours around Scandinavia. Johansson was a stand-in and studio bass player for various others, including
The Lost Patrol Band and
Imperial State Electric, and has also worked as a record producer. In 2005, Johansson started the label
Ny Våg together with
Dennis Lyxzén, and toured as a DJ on a regular basis. Between 2009 and 2010, he played in Swedish soul/rock/hiphop-artist
Adiam Dymott's backing band with
Thomas Rusiak, among various others. The (International) Noise Conspiracy recorded and played more than 700 shows worldwide as an active band between 1998 and 2009, and recorded two of their albums with producer
Rick Rubin for Rubin's label
American Recordings. In 2011, Johansson teamed up with ex-
Hellacopters-frontman
Nicke Andersson to form a band called Alonzo & Fas 3. During the same year Johansson started to work as a touring member of Brazilian electro outfit
CSS. Johansson played bass for
CSS until the end of 2012. In 2012, Johansson played bass in English/German power pop band "Cryssis", featuring Vom Ritchie (drummer of
Die Toten Hosen) and the same year, he was also in a Swedish street punk band called "Stilett". On August 29, 2013, Johansson was announced as the new bass player for
Against Me!. He would go on to play over 500 shows with the band, touring globally and playing on the band's 2016 album
Shape Shift with Me. On June 21, 2018, Johansson was replaced in
Against Me! by
Andrew Seward, his predecessor. Announcing the split on his Instagram page, Johannson noted he "was a fan of the band before [he] joined, and [he] will always support them." ==Band chronology==