Malfunkshun Andrew Wood asked him to join Malfunkshun after seeing Hagar working at the Showbox Theatre. Hagar worked hanging flyers and taking tickets for Showbox Theatre in exchange for free tickets to go to shows. Malfunkshun's three members (Kevin Wood, Andrew Wood, and Hagar) all used
stage names and wore white make-up, similar to the members of the band Kiss. Hagar chose the name Thundarr because of
Thor the Norse thunder god, and how drums relate to thunder. In 2006 Regan Hagar recorded an album as From The North with
Shawn Smith, Kevin Wood, and Cory Kane. This was a music project that used new music alongside lyrics left by Andrew Wood after his death. Regan left the band in 2011.
Brad Regan Hagar was the drummer for the band
Brad, which was active between 1992 until Shawn Smith's death in 2019. The band has released six albums. Although
Stone Gossard and
Shawn Smith usually wrote the songs, Hagar made contributions such as "Tea Bag", which was released on their 2012 album
United We Stand. The song was written and recorded at an earlier date. Hagar was also a member of the Brad offshoot band,
Satchel, which has since refolded back into Brad.
The Little Ships Based in Seattle, US and Stratford-upon-Avon, England, Regan joined the transatlantic band in early 2015. Their debut album,
Alone Together, was released in the summer of 2016. == Personal life ==