|

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Name
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Jack Flash
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A.K.A.
|
n/a
|
Secret ID.
|
None
|
Type
|
Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
Beano #355
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Year
|
1949
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Publisher
|
D.C. Thompson
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Country of origin
|
UK
|
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An alien boy from Mercury, who using wings that have grown from his ankles is able to travel at great speed, just like Mercury the God of speed. He crash landed on Earth, and using his powers rights wrong in the South of England.
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Name
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Jack Frost
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A.K.A.
|
n/a
|
Secret ID.
|
Unknown
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Type
|
Costumed Hero
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Affiliation/Team
|
Liberty Legion
|
1st Appearance
|
USA Comics #1
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Year
|
1941
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Publisher
|
Timely / Atlas Publications (Marvel)
|
Country of origin
|
USA
|
|
Jack Frost is a native of the Arctic. He finds a gold prospector dying of a gunshot wound, and goes to New York City to avenge the prospector's death. He does so, saving the prospector's daughter in the process but making himself an outlaw. Despite this he goes on to fight crime and evil. He can fly, has superhuman strength and is able to generate freezing temperatures to produce snow and ice.. (He has the same sort of attitude as Prince Namor.)
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Name
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Jack of Spades
|
A.K.A.
|
n/a
|
Secret ID.
|
Jack?
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Type
|
Costumed Hero
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Affiliation/Team
|
None
|
1st Appearance
|
Tops Comics #2002 (2nd issue)
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Year
|
1944
|
Publisher
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Consolidated Publications
|
Country of origin
|
USA
|
|
An innocent man is murdered in a gambling den. His last card, the Jack of Spades, falls from his hand and comes to life as it hits the floor. Jack swears to avenge the man and to rid the entire world of crime. He then "returns to his paper form, where he may always be found in any deck of cards awaiting the call of mystery and adventure in his battle against the forces of evil." He can also fly and he has a very stretchable cloak.
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Name
|
Jack Trent, Space Flyer
|
A.K.A.
|
n/a
|
Secret ID.
|
None
|
Type
|
Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
The Jet Comic #1 (only issue)
|
Year
|
1953
|
Publisher
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Hamilton & Co
|
Country of origin
|
UK
|
|
Jack Trent was based on Dan Dare, Pilot of the Future. Trent is the pilot of The Starfish, a spaceship designed to make a voyage to the moons of Saturn. He wears Crystophane Space suits.
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|
Name
|
Jaguar Boy
|
A.K.A.
|
N/A
|
Secret ID.
|
Kenneth McKinley
|
Type
|
Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
Adventure Comics #115?
|
Year
|
1947?
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Publisher
|
National Periodical Publications (DC)
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Country of origin
|
USA details missing
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|
[Further details unavailable]
|

|
Name
|
Jaguar Man
|
A.K.A.
|
n/a
|
Secret ID.
|
Murry Mane
|
Type
|
Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
Zoot Comics #2
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Year
|
1946
|
Publisher
|
Fox Features Syndicate
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Country of origin
|
USA
|
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Zookeeper Murray Mane slips into his alternate identity as Jaguar Man! Teaming up with glamorous lady scientist Dr. Carol Topaze and his pet jaguar Ja-Go, Jaguar Man tracks down bad guys and brings them to justice.
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Name
|
Jann of the Jungle
|
A.K.A.
|
n/a
|
Secret ID.
|
Jane Hastings
|
Type
|
Jungle Heroine
|
Affiliation/Team
|
None
|
1st Appearance
|
Jungle Tales #1
|
Year
|
1954
|
Publisher
|
Timely / Atlas Publications (Marvel)
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Country of origin
|
USA
|
|
Her origin is slightly complicated. Originally she went to Africa with Pat as a movie stunt double. She was "Jane Hastings," a "former circus trapeze artist and animal trainer." But once in the Congo she met and talked with Kuba, the leader of the "natives," and befriended him and them. When she mentioned her name, they broke into cheers of "Jann! Jann! Jann!" Later, when questioned about this, she reveals that "many moons ago" her grandmother (also named "Jann"), as a girl, lived in the jungle. When Grandmother Jann grew up she helped the natives, serving them in their times of need. Grandmother Jann eventually married a "white hunter of lions" and left the jungle. But she taught Jann's mother "all about the jungle, and mother, in turn, taught me!" The natives recognised her lineage immediately.
|

|
Name
|
Jeb Rivers, Daring Gentleman Adventurer
|
A.K.A.
|
n/a
|
Secret ID.
|
None
|
Type
|
Non Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
Hit Comics #61
|
Year
|
1949
|
Publisher
|
Quality Comics
|
Country of origin
|
USA
|
|
River Boat Captain and gambler, who travels the Mississippi. An early version of Maverick like character
|

|
Name
|
Jeep & Peep
|
A.K.A.
|
n/a
|
Secret ID.
|
None
|
Type
|
Costumed Heroes
|
Affiliation/Team
|
Jeep & Peep
|
1st Appearance
|
Jeep Comics #1
|
Year
|
1945
|
Publisher
|
R. B. Leffingwell and Co / Palace Promotions, Inc. U.S. (Armed Forces giveaways)
|
Country of origin
|
USA
|
|
Starnge couple of characters who drive (fly) around in a WW2 jeep having adventures. The actual covers of the comics allways looked surreal and enticing, (maybe that was the idea,) but the stories were just run of the mill dramas. With Jeep the older character trying to get Peep out of trouble.
|

|
Name
|
Jester (The)
|
A.K.A.
|
n/a
|
Secret ID.
|
Chuck Lane
|
Type
|
Costumed Hero
|
Affiliation/Team
|
None
|
1st Appearance
|
Smash Comics #22
|
Year
|
1941
|
Publisher
|
Quality Comics
|
Country of origin
|
USA
|
|
Chuck Lane is a rookie cop on the NYC force who tends to make the other cops laugh through his own clumsiness. Chuck decides to capitalize on this by dressing up in a jester outfit and fight crime as The Jester. He had no superpowers, but was agile and a good fighter.
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