CERULEAN began as a solo project of guitarist/singer Stephen Knapp in order to explore the highly dissonant realm of black and death metal. Bassist Jared Jonhson, guitarist Garrett Davis and drummer Ben Wilson joined the band not long after, and in 2023 CERULEAN moved to the San Diego metal scene releasing "Carrion Angel", the first of a two part EP that marks a refinement of the sound from Knapp's first two demos.