[1] Several members from the previous continuity are given new codenames and several new heroes are added, including XS, Sensor, Kinetix, and Gates.

The Legion are initially not allies of the United Planets, earning their respect by exposing their president Chu as corrupt and defeating the White Triangle.

[2] In Legion Lost, a group of Legionnaires disappear through a spatial rift and struggle to return home.

The ensuing limited series Legion Worlds (2001) showed what was happening back in the United Planets during their absence.

The most notable addition to the team during the title's publication was Superboy, a 21st-century clone of Superman who had previously been granted honorary membership.