Elysia was an American deathcore band from Shingle Springs, California. Originally called Elysium's Revenge, the band was started in 2003 while the members were just in grade nine and ten in high school. Since 2003, they have released two EPs and one full-length album, and have completed two US tours despite almost constant line-up changes. Having settled into a more solid line-up, the band released Lion of Judas, on June 10, 2008, through Ferret Records. The band disbanded in 2008, but announced their reformation in 2013.
They have toured and performed alongside many bands, including Arsonists Get All the Girls, Knights of the Abyss, Catherine, Emmure, Heavy Heavy Low Low, Impending Doom, Killwhitneydead, Suicide Silence and This Is Hell. They also have performed at the Saints & Sinners Festival in 2007. Elysia has close ties with Knights of the Abyss and Arsonists Get All the Girls; for example, Zak Vargas did guest vocals on Knights of the Abyss's full-length Juggernaut, on the track "Decaying Waste".