AFI is the abbreviation for the rock band A Fire Inside, a California-based group known for evolving their sound from hardcore punk into alternative rock and gothic rock since forming in 1991. The band's current lineup includes Davey Havok (vocals), Adam Carson (drums), Hunter Burgan (bass), and Jade Puget (guitar). AFI has achieved multi-platinum success with albums like Sing the Sorrow and Decemberunderground, and continues to release music and tour, solidifying their dedicated fanbase.