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

	First Appearance	Legion Membership	Origin
Bouncing Boy	Action Comics v1 #276, May 1961
Brainiac 5	Action Comics v1 #276, May 1961	Action Comics v1 #276, May 1961 (Joins)
Chameleon Boy	Action Comics v1 #267, August 1960
Colossal Boy	Action Comics v1 #267, August 1960
Cosmic Boy	Adventure Comics #247, April 1958	Superboy v1 #147, May/June 1968 (Co-Founder)
Triplicate Girl Duo Damsel Duplicate Girl	Action Comics v1 #276, May 1961 (As Triplicate Girl) Adventure Comics #341, February 1966 (As Duo Damsel)
Invisible Kid (Lyle Norg)	Action Comics v1 #267, August 1960
Lightning Lad	Adventure Comics #247, April 1958 (as Lightning Boy) Adventure Comics #267, December 1959 (as Lightning Lad)	Superboy v1 #147, May/June 1968 (Co-Founder)
Phantom Girl	Action Comics v1 #276, May 1961
Saturn Girl	Adventure Comics #247, April 1958	Superboy v1 #147, May/June 1968 (Co-Founder)
Shrinking Violet	Action Comics v1 #276, May 1961
Star Boy	Adventure Comics #282, March 1961		Adventure Comics #282, March 1961
Sun Boy		Action Comics v1 #276, May 1961
Superboy (Kal-El)	Action Comics v1 #1, June 1938 (As Superman) More Fun Comics #101, January/February 1945 (As Superboy)	Adventure Comics #247, April 1958 (Joins)
Supergirl	Action Comics v1 #252, May 1959	Action Comics v1 #267, August 1960 Action Comics v1 #276, May 1961 (Joins)

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 and Facilities

• Jet pack - Adventure Comics #247, April 1958
• Legion clubhouse - Adventure Comics #247, April 1958
• Meeting table with member nameplates - Adventure Comics #247, April 1958
• Television Trouble-Finder - Adventure Comics #247, April 1958
• 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