In the show's canon, the G.E.L.F.s were created during the "dark age of genetics" (2001 to 2003). They were manufactured solely for the purpose of waging war. United Nations Resolution G-932 outlawed them by 2004. The existing G.E.L.F.s were rounded up and exiled to an island colony, "Dagger Island". The second season's opening episode "Daggers" established much of their background, and also introduced Mariah, the leader of the G.E.L.F. uprising. Portrayed by actress Sam Jenkins, she would reappear in the episode "Dagger Redux".