There are two artists represented by this name: 1)Sunbrain (japan) is J-pop Duo. consisted of Minami Yasuhiro(microman),Maruya Manabu. They form 2004. Debut in 2005. It Was Used Japanimation for Opening Theme. They Release , for same animation 2th Opening Theme. 2)Sunbrain was a rock band formed in Clemson, South Carolina in 1990. Sunbrain consisted of David Dondero on lead vocals and guitars, Steve Glickman on drums, Russ Hallauer (who founded Ghostmeat Records) on guitar, and Eric Nail on bass. Sunbrain broke up in 1996 after their fourth release, Liquid.