List of first appearances/Preboot

Lists of the first appearances of recurring characters, equipment and Legion-related concepts in the Preboot family of eras. Planets and settings can be found listed separately at List of worlds/Pre-Crisis.

Legionnaires

• Chameleon Boy - Action Comics v1 #267, August 1960
• Colossal Boy - Action Comics v1 #267, August 1960
• Cosmic Boy - Adventure Comics #247, April 1958
  • Co-founds Legion - Superboy v1 #147, May/June 1968
• Invisible Kid (Lyle Norg) - Action Comics v1 #267, August 1960
• Lightning Lad - Adventure Comics #247, April 1958 (as Lightning Boy)
  • As Lightning Lad - Adventure Comics #267, December 1959
  • Co-founds Legion - Superboy v1 #147, May/June 1968
• Saturn Girl - Adventure Comics #247, April 1958
  • Co-founds Legion - Superboy v1 #147, May/June 1968
• Star Boy - Adventure Comics #282, March 1961 (and origin)
• Superboy (Kal-El)- Adventure Comics #247, April 1958 (Joins Legion)
  • As Superman - Action Comics v1 #1, June 1938
  • As Superboy - More Fun Comics #101, January/February 1945

Villains

• Lex Luthor- Superboy v1 #86, January 1961 (First interaction with the Legion)
  • First appearance - Action Comics v1 #23, April 1940

Groups

• The Legion of Super-Heroes - Adventure Comics #247, April 1958
  • Origin - Superboy v1 #147, May/June 1968
• The Legion of Super-Villains - Superboy v1 #86, January 1961 (First mentioned)

Equipment

• Time bubble - Adventure Comics #247, April 1958

Bylaws and Rules

• Requirement that all members be 18 years old or younger - Action Comics v1 #267, August 1960