Born Gilbert Milam, Jr. in San Francisco, he began rapping while still in high school in the mid-2000s, and it wasn’t long before he self-produced and released his debut mixtape, Dirty Sneakers…Plenty of Ways to Get It, in 2007. An avid marijuana enthusiast, Milam spent a lot of time working in cannabis dispensaries while he was building his hip-hop career. It was through his fame in weed circles that he eventually met and became friends with stoner rap icon Wiz Khalifa. Berner was signed to Khalifa's Taylor Gang Records in 2012, touring with the label's family of artists before the release of his first set for the label (and fourth overall), Urban Farmer. Along with consistent musical output, Milam branched out to other business pursuits including fashion lines and even his own genetically engineered original strains of medical marijuana.
In the 2010s, Berner issued a handful of solo efforts, including the Billboard-charting 20 Lights EP and Hempire. He also collaborated with a number of fellow rappers, including B-Real (the Prohibition trilogy), Cam'ron (Contraband), Styles P (Vibes), Young Dolph (Tracking Numbers), and Mozzy (Slimey Individualz). Berner released the album El Chivo in May 2019, which included the single "Wassup" (featuring Wiz Khalifa and Chevy Woods). The 2020s brought a rush of new material, as Berner collaborated with Larry June on the Cooks Orange Juice EP and then with Cozmo on the full-length mixtape Respect the Connect, both released in 2020. The following year a series of gangster-themed releases included the Paulie Cicero mixtape and the studio album Gotti. Both were heavy on features, and Gotti featured the song "Too Many Goats," a group track that included appearances from Rick Ross, Nas, Kevin Cossom, and Jadakiss. The album also featured guest spots from Rod Wave, Future, and familiar Berner counterparts Cozmo and Wiz Khalifa. In 2022, Berner released "Bomb Bay on My Back" and "Cookies Forever," and followed with From Seed to Sale, another full-length. ~ Fred Thomas, Rovi