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	Action Comics v1 #276, May 1961 (Applies)	Superman v1 Annual #4, 1962 (Brief details)
Brainiac 5	Action Comics v1 #276, May 1961	Action Comics v1 #276, May 1961 (Joins)	Action Comics v1 #276, May 1961 (Brief details)
Chameleon Boy	Action Comics v1 #267, Aug 1960	Action Comics v1 #267, Aug 1960 (Joins prior to issue)	Superman v1 Annual #4, 1962 (Brief details)
Colossal Boy	Action Comics v1 #267, Aug 1960	Action Comics v1 #267, Aug 1960 (Joins prior to issue)	Superman v1 Annual #4, 1962 (Brief details)
Cosmic Boy	Adventure Comics #247, Apr 1958	Superboy v1 #147, May/Jun 1968 (Co-Founder)	Superman v1 Annual #4, 1962 (Brief details)
Triplicate Girl Duo Damsel Duplicate Girl	Action Comics v1 #276, May 1961 (Triplicate Girl) Adventure Comics #341, Feb 1966 (Duo Damsel)	Superboy v1 #147, May/Jun 1968 (Joins)	Superman v1 Annual #4, 1962 (Brief details)
Invisible Kid (Lyle Norg)	Action Comics v1 #267, Aug 1960	Action Comics v1 #267, Aug 1960 (Joins prior to issue)	Superman v1 Annual #4, 1962 (Brief details)
Lightning Lad	Adventure Comics #247, Apr 1958 (Lightning Boy) Adventure Comics #267, Dec 1959 (Lightning Lad)	Superboy v1 #147, May/Jun 1968 (Co-Founder)	Superman v1 Annual #4, 1962 (Brief details)
Mon-El	Superboy v1 #89, Jun 1961	Adventure Comics #300, Sep 1962	Superboy v1 #89, Jun 1961
Phantom Girl	Action Comics v1 #276, May 1961	Superboy v1 #147, May/Jun 1968 (Joins)	Superman v1 Annual #4, 1962 (Brief details)
Saturn Girl	Adventure Comics #247, Apr 1958	Superboy v1 #147, May/Jun 1968 (Co-Founder)	Superman v1 Annual #4, 1962 (Brief details)
Shrinking Violet	Action Comics v1 #276, May 1961	Action Comics v1 #276, May 1961 (Applies)	Superman v1 Annual #4, 1962 (Brief details)
Star Boy	Adventure Comics #282, Mar 1961	Adventure Comics #282, Mar 1961 (Joins in flashback)	Adventure Comics #282, Mar 1961
Sun Boy	Action Comics v1 #276, May 1961	Action Comics v1 #276, May 1961 (Applies) Adventure Comics #290, Nov 1961 (Joins prior to issue)	Adventure Comics #290, Nov 1961 (Briefly details) Superman v1 Annual #4, 1962 (Brief details)
Superboy (Kal-El)	Action Comics v1 #1, Jun 1938 (Superman) More Fun Comics #101, Jan/Feb 1945 (Superboy)	Adventure Comics #247, Apr 1958 (Joins)	Action Comics v1 #1, Jun 1938
Supergirl	Action Comics v1 #252, May 1959	Action Comics v1 #267, Aug 1960 (Applies) Action Comics v1 #276, May 1961 (Joins)	Action Comics v1 #252, May 1959

Villains and Adversaries

• Cosmic King - Superman v1 #147, Aug 1961
• Infinite Monster - Action Comics v1 #285, Feb 1962
• Lex Luthor - Superboy v1 #86, Jan 1961 (First interaction with the Legion)
  • First appearance - Action Comics v1 #23, Apr 1940
• Lightning Lord - Superman v1 #147, Aug 1961
• Saturn Queen - Superman v1 #147, Aug 1961

Adult Legion

• Cosmic Man - Superman v1 #147, Aug 1961
• Lightning Man - Superman v1 #147, Aug 1961
• Saturn Woman - Superman v1 #147, Aug 1961

Groups

• The Legion of Super-Heroes - Adventure Comics #247, Apr 1958
  • Origin - Superboy v1 #147, May/Jun 1968
• The Legion of Super-Outlaws - Action Comics v1 #283, Dec 1961
• The Legion of Super-Villains - Superboy v1 #86, Jan 1961 (First mentioned)
  • First appearance - Superman v1 #147, Aug 1961
• The Adult Legion - Superman v1 #147, Aug 1961

Equipment and Facilities

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

Bylaws and Rules

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