The Legion was in the past to save cities which would, in the future, have ties to current Legion members. These are:
Rimbor – homeworld of Ultra Boy
Cargg – homeworld of Triplicate Girl
Bismoll – homeworld of Matter-Eater Lad
Zoon – homeworld of Timbre Wolf
Titan – Home of Saturn Girl
Xanthu – Home of Starman
Imsk – Home of Shrinking Violet
Phlon – Home of Chemical King
Durlan – Home of RJ Brande and Chameleon Boy