"A Zeta alien is a type of alien that can only be found in the Zeta Gate. They were introduced sometime in 2011 along with the Epsilon Gate release."@en . . "A Zeta alien is a type of alien that can only be found in the Zeta Gate. They were introduced sometime in 2011 along with the Epsilon Gate release."@en . . "Alien/Zeta"@en . .