Campbell grew up in Las Vegas. He played with the band Attaboy Skip before joining Neon Trees. Tyler Glenn, lead singer of Neon Trees, named the band after the lighted trees on the In-N-Out Burger signs. Campbell didn’t join the band until after the name was selected, but ironically Campbell’s father installed the exact Neon Trees in the Las Vegas In-N-Out that was Glenn’s inspiration.
Campbell served a mission to the Detroit, Michigan, area. He had corrective open-heart surgery in December 2013. He and his wife, Emilie, both grew up in Las Vegas and dated since high school. She is a classically trained pianist and shares his passion for rock music. They live in Cedar Hills, Utah, with their two children, Katie and Conner. Conner has catastrophic epilepsy and is on the autism spectrum. Emilie and Branden are active with organizations like Hope 4 Children with Epilepsy and other organizations.