List of superhero debuts

Table columns:
Character / Team
Year Debuted
Company
Creator/s
First Appearance

Table rows:
cells: Flash (Jay Garrick)
1940 (January)
DC
Gardner Fox, Harry Lampert
Flash Comics #1
cells: Hawkman (Carter Hall)
1940 (January)
DC
Gardner Fox
Flash Comics #1
cells: Johnny Thunder
1940 (January)
DC
John W. Wentworth, Stan Asch
Flash Comics #1
cells: Whip (Rodney Gaynor)
1940 (January)
DC
John B. Wentworth, George Storm
Flash Comics #1
cells: The Shield (Archie)
1940 (January)
MLJ/Archie
Harry Shorten, Irv Novick
Pep Comics #1
cells: Captain Marvel (DC Comics)
1940 (February)
Fawcett Comics/DC
C. C. Beck, Bill Parker (comics)
Whiz Comics #2
cells: Electro (comics)
1940 (February)
Marvel/Timely
Steve Dahlman
Marvel Mystery #4
cells: Spectre (comics) (Jim Corrigan)
1940 (February)
DC
Jerry Siegel
More Fun Comics #52
cells: Doc Strange
1940 (February)
Nedor Comics
Richard E. Hughes, Alexander Kostuk
Thrilling Comics #1
cells: Hourman (Rex Tyler)
1940 (March)
DC
Ken Fitch, Bernard Bailey
Adventure Comics #48
cells: Black Marvel (Daniel Lyons)
1940 (March)
Marvel/Timely
Al Gabriele and unknown writer
Mystic Comics #5
cells: Blazing Skull (Mark Todd)
1940 (March)
Marvel/Timely
Mystic Comics #5
cells: Robin (comics) (Dick Grayson, original)
1940 (April)
DC
Bob Kane, Bill Finger, Jerry Robinson
Detective Comics #38
cells: Catwoman (Selina Kyle)
1940 (April)
DC
Bob Kane, Bill Finger
Batman #1
cells: Bulletman and Bulletgirl
1940 (May)
Fawcett Comics/DC
Bill Parker (comics)
Nickel Comics #1
cells: Doctor Fate (Kent Nelson & Nabu)
1940 (May)
DC
Gardner Fox, Howard Sherman
More Fun Comics #55
cells: Scarlet Avenger
1940 (June)
Harry Shorten, Irv Novick
Zip Comics #1
cells: Uncle Sam (comics)
1940 (July)
Quality Comics/DC
Will Eisner
National Comics #1
cells: Green Lantern (Alan Scott, original)
1940 (July)
DC
Martin Nodell, Bill Finger
All-American Comics #16
cells: The Red Bee
1940 (July)
Quality Comics/DC
Toni Blum, Charles Nicholas
Hit Comics #1
cells: Daredevil (Gleason Publications)
1940 (September)
Gleason Publications
Jack Binder (comics)
Silver Streak #6
cells: Atom (Al Pratt)
1940 (October)
DC
Ben Flinton, Bill O'Conner
All-American Comics #19
cells: Vision (Timely Comics)
1940 (November)
Marvel/Timely
Joe Simon, Jack Kirby
Marvel Mystery Comics #13
cells: Red Tornado (Ma Hunkel)
1940 (November)
DC
Sheldon Mayer
All-American Comics #20
cells: Quicksilver (Max Mercury)
1940 (November)
Quality Comics/DC
Jack Cole (artist), Chuck Mazoujian
National Comics #5
cells: Justice Society of America
1940 (Winter)
DC
Gardner Fox
All Star Comics #3
cells: Black Terror
1941 (January)
Nedor Comics
Richard E. Hughes, Don Gabrielson
Exciting Comics #9
cells: Professor Supermind and Son
1941 (February)
Dell Comics
Popular Comics #60
cells: Captain America (Steve Rogers)
1941 (March)
Marvel/Timely
Joe Simon, Jack Kirby
Captain America Comics #1
cells: Starman (Ted Knight) (Ted Knight)
1941 (April)
DC
Gardner Fox, Jack Burnley
Adventure Comics #61
cells: Doctor Mid-Nite (Charles McNider)
1941 (April)
DC
Charles Reizenstein, Stanley Aschmeier
All-American Comics #25
cells: Sargon the Sorcerer
1941 (May)
DC
John B. Wentworth, Howard Purcell
All American Comics #26
cells: Hawkgirl (Shiera Sanders Hall)
1941 (July)
DC
Gardner Fox Evelyn Gaines
All-Star Comics #5
cells: Whizzer (Robert Frank)
1941 (August)
Marvel/Timely
Al Avison, Al Gabriele
USA Comics #1
cells: American Crusader
1941 (August)
Nedor Comics
Writer and artist unknown
Thrilling Comics #19
cells: Blackhawk (DC Comics)
1941 (August)
Quality Comics/DC
Will Eisner, Chuck Cuidera
Military Comics #1
cells: Miss America (DC Comics)
1941 (August)
Quality Comics/DC
Military Comics #1
cells: 711 (Quality Comics)
1941 (August)
Quality Comics/DC
George Brenner
Police Comics #1
cells: Human Bomb
1941 (August)
Quality Comics/DC
Paul Gustavson
Police Comics #1
cells: Plastic Man
1941 (August)
Quality Comics/DC
Jack Cole (artist)
Police Comics #1
cells: Phantom Lady
1941 (August)
Quality Comics/DC
Arthur Peddy
Police Comics #1
cells: Nelvana of the Northern Lights
1941 (August)
Hillborough Studios (Canada)
Adrian Dingle
Triumph Comics #1
cells: Johnny Quick (Johnny Chambers)
1941 (September)
DC
Mort Weisinger, Chad Grothkopf
More Fun Comics #71
cells: Captain Flag
1941 (September)
MLJ/Archie
Joe Blair, Lin Streeter
Blue Ribbon Comics #16
cells: Fighting Yank
1941 (September)
Nedor Comics
Richard Hughes, Jon Blummer
Startling Comics #10
cells: Aquaman
1941 (November)
DC
Mort Weisinger, Paul Norris
More Fun Comics #73
cells: Green Arrow (Oliver Queen) and Speedy (comics)
1941 (November)
DC
Mort Weisinger, Greg Papp
More Fun Comics #73
cells: Sandy the Golden Boy
1941 (December)
DC
Joe Simon and Jack Kirby
Adventure Comics #69
cells: Seven Soldiers of Victory
1941 (December)
DC
Mort Weisinger
Leading Comics #1
cells: Wonder Woman (Diana Prince)
1941 (December)
DC
William Moulton Marston, H. G. Peter
All Star Comics #8 / Sensation Comics #1
cells: Liberator (Nedor)
1941 (December)
Nedor Comics
Writer and artist unknown
Exciting Comics #15
cells: Captain Marvel, Jr.
1941 (December)
Fawcett Comics/DC
Ed Herron, Mac Raboy
Whiz Comics #25
cells: Wildcat (comics)
1942 (January)
DC
Bill Finger, Irwin Hasen
Sensation Comics #1
cells: Mister Terrific (comics)(Terry Sloane)
1942 (January)
DC
Chuck Reizenstein, Hal Sharp
Sensation Comics #1
cells: Air Wave
1942 (February)
DC
Murray Boltinoff or Mort Weisinger, and Lee Harris (illustrator)
Detective Comics #60
cells: Johnny Canuck (as superhero)
1942 (February)
[Canada]
Leo Bachle
Dime Comics #1
cells: Manhunter (comics) (Paul Kirk)
1942 (April)
DC
Jack Kirby, Joe Simon
Adventure Comics #73
cells: Manhunter (comics) (Dan Richards)
1942 (March)
Quality Comics/DC
Police Comics #8
cells: Robotman (Robert Crane)
1942 (April)
DC
Jerry Siegel, Leo Nowak
Star-Spangled Comics #7
cells: Commando Yank
1942 (July)
Fawcett Comics/DC
Wow Comics #6
cells: Captain Commando
1942 (August)
S.M. "Jerry" Iger, Alex Blum
Pep Comics #30
cells: Kid Eternity
1942 (December)
Quality Comics/DC
Otto Binder, Sheldon Moldoff
Hit Comics #25
cells: Mary Marvel
1942 (December)
Fawcett Comics/DC
Otto Binder, Marc Swayze
Captain Marvel Adventures #18
cells: Canada Jack
1943 (March)
George Menendez Rae
Canadian Heroes Vol. 1, #5
cells: Miss America (Marvel Comics)
1943 (November)
Marvel/Timely
Otto Binder, Al Gabriele
Marvel Mystery Comics #49
cells: Grim Reaper (Nedor)
1944 (May)
Nedor Comics
Author unknown, artist Al Camy
Fighting Yank #7
cells: Superboy (Clark Kent)
1945 (January)
DC
Don Cameron, Jerry Siegel, Joe Shuster
More Fun Comics #101
cells: All-Winners Squad
1946 (Fall)
Marvel/Timely
Martin Goodman (publisher), Bill Finger
All Winners Comics #19
cells: Black Canary
1947 (August)
DC
Robert Kanigher, Carmine Infantino
Flash Comics #86
cells: Moon Girl
1947 (Fall)
Gardner Fox, Sheldon Moldoff
The Happy Houligans #1
cells: Golden Girl (Betsy Ross)
1947 (December)
Marvel/Timely
Captain America #1 (As Betsy Ross); Captain America #66 (As Golden Girl)

Questions about this table:
originalText: who came first captain marvel or captain america
answer: answerTexts: Captain Marvel