The Null Void is an alternate dimension which was discovered by the Galvans prior to when Ben first obtained the Omnitrix. It acts as a prison built for highly dangerous criminals such as Vilgax. It is now currently used as a 'base' where Ben and Rook come to stay every now and then. Way Bads, Null Void Guardians and such can be commonly found throughout the Null Void. They are extremely dangerous and hostile.
