Atom Blake the Boy Magician
Calkins, Godfrey (Wow #1; Atom Blake foe) - millionaire businessman 
     developed interplanetary craft (the Stratoglobe) and cryogenics system 
     to preserve the inhabitants of the ship on journey, testing it on two 
     survivors of a train crash he arranged. 

Balbo, Boy Wizard
Crux, Victor, Dr. (America's Greatest Comics #7; Balbo foe) - Nazi spy 
     specialising in smuggling industrial secrets, worked for Friedrick 
     Outz, looked fat his bulk actually hid a lot of muscle.
Outz, Friedrick (America’s Greatest Comics #7; Balbo foe) - monocled Nazi 
     spy master. 

Blue Beetle
the Burning Death (Blue Beetle #10) - drug manufacturer Leon Sugar injects 
     business partner with drug which turns his blood to flame; bald, 
     pointed ears, fond of green suits.
Countess Belladonna (Blue Beetle foe) - powers?
Doc (Blue Beetle foe) - crazed scientist.
the Eel (Blue Beetle foe) - powers?
the Headhunter Queen (All-Top #12; Blue Beetle foe) - powers?
Hogg, Porky (Blue Beetle #8) - mobster steals radium to threaten city.
Horsie & Trip (Blue Beetle #39) - steal size-changing formula.
the Hoops (Mystery Men #25; Blue Beetle foes) - Nazi undercover gang.
Mr. Downhill (Blue Beetle foe) - powers?
the Mummy That Never Died (Blue Beetle #47) - powers?
Scrag (Blue Beetle foe) - powers?
Shady Lady (Blue Beetle #51) 
the Treacherous Trio (All-Top #8; Blue Beetle foes) - powers?
the Wart (Blue Beetle foe) - powers?

Bulletman
Blackmask (Bulletman foe) - mysterious criminal whose face is never seen.
Black Rat (Bulletman foe) - superstrong; costume looks like a rodent.
Black Spider (Bulletman #1) - costumed crook.
Captain Nazi (Master #21; Bulletman/Marvel Family foe).
Clinging Vine (Master #46; Bulletman foe) - cunning girl gangster; plant 
     control?
Death the Comedian (Bulletman #14) - powers?
Dr. Mood (Bulletman #1) - monkey-faced villain.
Dr. Riddle (Bulletman #5) A hunchback psychopath who taunts the police with 
     riddling clues to his crimes.
Fat Fiend (Bulletman #5) - powers?
Gorgon (Bulletman foe) - Greek monster.
Headless Hunter (Bulletman foe) - powers?
Hunchback (X-Mas Comics #1; Bulletman foe) - actor Dennis Mills was just 
     becoming popular when he drank a little too much and crippled himself. 
     Increasingly bitter about the loss of his fame he snapped, disguised
     himself as a hunchback and began to haunt film studios, at first  
     harassed new leading men but, when the studios didn't stop filming, 
     turned to murder. 
Invisible Man (America's Greatest Comics #1; Bulletman foe) - Ben Leighton 
     creates suit which allows him to become invisible.
Limping Mummy (X-Mas Comics #1; Bulletman foe) - Jason Hilder. Hilder, editor 
     for the New York Times, dons guise to scare off people.
Mr. Ego (Bulletman #8) - "Freudian" crime king.
Mr. Murder (Bulletman Dime Action Book) - powers?
Murder Prophet (Bulletman #5) - foretells evil then makes prophecies true.
The Poser (Power of Shazam #35; Bulletman foe) - Nazi master of disguise.
Revenge Syndicate (Bulletman #7) - the Black Rat, the Murder Prophet, the
     Weeper
Thief of Arts (Master #63; Bulletman foe) - art thief armed with an
     electrified  sword-cane; in civilian life, he's M. Tupay, an art
     galley owner.
The Waxer (Bulletman foe) - ties his victims to a huge turntable and then 
     records their dying screams as a huge recording needle drops on them 
     while they were going (at that time the only speed available) at 78 rpm. 
the Weeper (Bulletman foe) - capable of the most brutal of murders, but
     sheds tears for his victims; wears a blue opera cape and top hat, and
     carries a wicked little walking stick; arsenal also includes gas
     bombs.
the Weeper II (Bulletman foe) - at some point in the Bulletman stories, the 
     Weeper died and was replaced by his son; in Mary Marvel #8 in which 
     Bulletgirl guest-starred and the two heroines fought Dr. Riddle and The 
     Weeper's son, he says, "My father, the true Weeper, is dead -- Sob! But I 
     am carrying on with his name!"

Captain Kid

Captain Marvel
Herkimer (Captain Marvel foe) - talking crocodile man from the planetoid 
     Punkus, who served the wormlike Mr. Mind in the Monster Society of Evil.  
     After the Monster Society disbanded, Herkimer gave up on a life of crime
     and joined a circus in the midwest.
Satyr (Marvel Family #90, unpublished, synopsis appears in Best of Alter Ego; 
     Marvel Family foe) - evil incarnation of the god Pan.

Captain Marvel, Junior
the Acrobat (CM3 #41) - trapeze artist Mr. Green suffers from "moonitis" and 
     becomes the super-strong, homicidal Acrobat when the moon is full.
the Animal Master (CM3 #71) - Professor Earnest Vorst uses "telepathy translator"
     to command animals.
Baron Drakis (CM3 #11) - international spy leader who also transforms into a 
     giant werewolf.
Dr. Satanas (Bravo #16; Captain Marvel, Jr. foe) - powers?
Greybeard (CM3 #37) - imprisoned in 1846 for 99 sentence, takes over gang of
     criminals on release.
Mr. Hydro (CM3 #62) - Professor Potter's assistant steals a "fluidizer" which 
     allows him to transform into water.
the Human Dynamo - (CM3 #69) - Shocking McGoon survives own electrocution and
     ability to generate fatal electrical discharges.
Shadow that Walks (CM3 #1) -  Yvonne Sergo, beautiful stage ventriloquist learned 
     of fortune hidden within the walls of Dumont Family estate; adapted talking 
     shadow act to become murderous shadow villain, she hoped to keep everyone 
     away from the estate until she located treasure.
Sneaker (CM3 #62) - ex-jockey with flying horse.
Woton (Master #42; Captain Marvel, Jr. foe) - evidently a Teutonic god (although
     not particularly resembling Odin). 

Captain Midnight
Barracuda (Captain Midnight foe) - Japanese acquatic villain.
Dr. Osmosis (Captain Midnight foe) - evil scientist.
Fang (Mutual Radio 1940; Captain Midnight foe) - Ivan Shark's first 
     lieutenant
Fury Shark (Mutual Radio 1940; Captain Midnight foe) - Ivan Shark's 
     beautiful daughter
Gardo (Mutual Radio 1940; Captain Midnight foe) - Ivan Shark's second 
     lieutenant
Jagga (Captain Midnight foe) - savage Plutonian space raider.
Ivan Shark (Mutual Radio 1940; Captain Midnight foe)
Luna White (Captain Midnight foe) - purported Nazi spy, actually Allied
     double-agent. 
Xog (Captain Midnight #64) - evil lord of Saturn; living Saturnians (and
     their warships) are formed from the gaseous rings that surround the
     planet, hence are effectively numberless.

Commando Yank
Black Dragon Society (Wow #18; Commando Yank foe) - Japanese kidnappers/terrorists.
Dr. Yaki (Wow #40; Commando Yank foe) - invents a serum that makes men into giants. 

Dave Dean
Wing Po (Dave Dean foe) - Chinese mandarin; commands ship and followers
     in the Tropics.

Devil's Dagger

Diamond Jack
Kruger, Daniel, Dr.(Wow #1; Diamond Jack foe) - mad scientist uses a captive 
     plastic surgeon to attach vulture masks to select victims, then applies drugs 
     and hypnotism to weaken their wills and convince them that they were now truly 
     vulture men. 

El Carim
Black Hood (X-Mas Comics #1; El Carim foe) - criminal mastermind wore a 
     black body suit and hood. He also carried a gun which he didn’t 
     hesitate to use to punish a lackey or silence a witness. 

Golden Arrow

Hunchback

Hoppy the Marvel Bunny
Black Bill the Bear (Funny Animals #?; Hoppy foe) - a bully.
Captain Black Bunny (Funny Animals #32; Hoppy foe) - comes from deep
     within the earth's core; aided by gang of imps; flies with the 
     aid of magic boots and has other powers.
Leopard Men (Funny Animals #?; Hoppy foes) - carnivorous.
the Storm King (Funny Animals #22; Hoppy foe) - responsible for magically
     creating storms; lives on black storm vloud.

Ibis the Invincible
Black Pharoah - (Ibis #1) - Ibis' evil uncle revived by the Sons of Set, 
     now half jackal
Dr. Hookah (Whiz #57; Ibis foe) - race car driving fakir who uses black
     magic in an attempt to win the Acme Sports Meet.
Flying Dutchman (Whiz #27; Ibis foe) - Captain von Falkenberg strikes a deal
     with the devil 400 years ago and is doomed to roam in a ghost ship.
Dr. Hex (Captain Marvel Jr. #1; Ibis foe) - wielding a wand very similar to 
     the Ibis Stick, self-professed master of mystic malevolence.
Hydra (All-Hero #1; Ibis foe) - John Oberon in possession of spells which
     transform him into ancient Hydra.
Ramses (Whiz #26; Ibis foe) - resurrected pharoah who brings the demonic Bes and 
     Khor to do battle with Ibis.
Trug (Whiz #2; Ibis foe) - Indian con man used knowledge of mysticism to steal 
     fortunes from men and women around the world. 

Judomaster & Tiger
the Acrobat (Judomaster #95)
the Cat (Judomaster #91) - Japanese agent; master of the bokken stick.
Japanese Sandman (Judomaster #98) - powers?
the Mountain Storm (Judomaster #89) - huge, powerful, sumo-costumed guy.
the Smiling Skull (Judomaster #92) - Rudolf Wolk, German judo expert with smiling 
     skull-face.
[see Appendix]  

Mary Marvel
Professor Van Ish (Wow #30; Mary Marvel foe) - uses his z-ray to step into 
     mirrors. He can then reach out from the other side of a mirror to rob.  
     Don't go into the mirror world, though.  It's a cutesy fairy-tale place 
     of talking sunflowers and playing card kings and queens, where powers work 
     in reverse: you fly backward to move forward, and hit softly to KO your
     opponent.

Master Man

Minute Man
Black Poet (Minute Man #3) - S.S. agent Heinrick Von Strueber masqyerades
     as American millionaire; send morbid poems with paper soaked in a
     poisonous acid; wears fright mask, floppy hat and cloak.
Hawk (Master #22; Minute Man foe) - Godfrey Bun had the ability to fly; 
     cape, clawed gloves, a gargoyle mask, and bat wings.
Illyria (Minute Man Dime Action Book) - Nazi spy mistress who uses pheromones 
     to seduce secrets out of top-ranking Allied officials.
Mr. Skeleton (America's Greatest Comics #1; Minute Man foe) - ten-foot
      Nazi monster with white skull face.

Mr. Scarlet & Pinky
the Black Clown (America's Greatest Comics #1; Mr. Scarlet foe) - Henry 
     Parrish, the owner of the Black Hawk Traveling Circus Company; ran 
     crooked games and gathering blackmail information through fortune 
     tellers and mentalist acts. 
Black Sphinx (Wow #?; Mr. Scarlet foe) - powers?
Black Thorn (America's Greatest Comics #1; Mr. Scarlet foe)-  Henry Hawley,
     invented mummification ray; costume with a single horn in the middle 
     of his forehead. 
Dr. Death (America's Greatest Comics #1; Mr. Scarlet foe) - Dietrich Neumann, 
     skull and crossbones tattooed onto his forehead; a large man, strong and 
     skilled fighter.
Death Battalion (America's Greatest Comics #1; Mr. Scarlet foe) - the Brain, 
     Dr. Death, Horned Hood, Laughing Skull, others.
Ghost (America's Greatest Comics #1; Mr. Scarlet foe) - Val Lukovich; warehouse 
     worker shot through the head by thieves; believing that he was dead and that 
     the dead remain on Earth only to end the lives of the living, he dressed in 
     a white sheet he became a serial strangler.
the Hook (Wow #9, Mr. Scarlet foe) - drsses as pirate with a hook for a hand.
Horned Hood (America's Greatest Comics #1; Mr. Scarlet foe) - Joe Mallone, leg-
     breaker who used a devil costume and a lead-cored thorny club.
Laughing Skull (America's Greatest Comics #1; Mr. Scarlet foe) -  John Dodd, former 
     banker/embezzler, donned skull mask and white robes and began killing people  
     associated with banking; favorite method is burying them alive with tombstones 
     bearing rhyming epitaphs.  
Mr. Green & Greeny (Wow #28; Mr. Scarlet foe) - extortionists, of the pay
     up-or my next arrow finds your heart variety; Mr. Green is a bowman,
     but his only trick arrow seems to be a flaming arrow; in reality a butler
     to Mr. Archibald Greene, the man he tried to divert suspicion to; Greeny 
     is just a "Yeah, boss" type of gunman.
Sun Man (Wow #30; Mr. Scarlet foe) - weather man Bernie Zunn uses mirrors
     to concentrate the sun's rays on his victims, causing them to die 
     of sunstroke; also uses trick mirrors to fight, usually blinding or
     burning his opponents..

Mystic Moot

Nyoka, Jungle Girl
Vultura (Master #50; Nyoka foe) - queen ruler of renegade band of Arabian
     outlaws; bodyguarded by giant gorilla named Satan.

Phantom Eagle
the Black Flamingo (Wow #63; Phantom Eagle foe) - operates a black plane
     of an odd design with a streamlined loudspeaker built into its top,
     through which he barks orders to airliners or airports; operates a
     protection shakedown, demanding payment of commercial flying in the
     South American country of San Danito.

Radar
Anarcho (Comics Novel #1; Radar foe) - "Dictator of Death" who employs
     Dr. Fu Tong, El Diablo, Erik Hevling, and Lord Craven

The Red Gaucho

Scoop Smith
Doctor Death (Whiz #1; Scoop Smith foe) - steals radium to perfect
     a device which brings the dead back to life (the fiend!)

Spy Smasher/Crime Smasher
America-Smasher (America's Greatest Comics #1; Spy Smasher foe) - short, chubby German 
     agent; wears a monocle and a spike-knuckled chain-mail glove.
the Beetle (Spy Smasher #10) - powers?
Dark Angel (Spy Smasher #1) - sultry villainess.
Death (Spy Smasher #5) - powers?
Doctor Blizzard (Spy Smasher #9) - powers?
the Eye (Spy Smasher #2) - powers?
the Faker (Spy Smasher #10) - powers?
Golden Wasp (Spy Smasher #7) - sort of Green Hornet gone wrong.
Grosso (Whiz #15; Spy Smasher foe) - Frankenstein-like monster, usually worked
     for the Mask.
Man in the Iron Mask (All-Hero #1; Spy Smasher foe) - Joseph Gruller has hideously 
     deformed face which he hides behind an iron mask; hating anyone with normal 
     features he relishes his freedom to inflict pain and disfigurement under Gestapo 
     lead (though he hates his superiors as well). 
the Mask (Whiz  #3; Spy Smasher foe) - foreign master spy.
the Red Death (Spy Smasher #2) - Nazi spymaster; wears white skull mask and red robe; 
     gun shoots poisonous red powder which turns victim's skin red.
the Tigress (Spy Smasher #2) - blonde femme fatale, Nazi agent, fond of sleeveless
     tiger-striped tunic.
Vikranz (Spy Smasher #1) - sinister, bearded spy.

War Bird

Warlock the Wizard

Don Winslow
Crocodile (Don Winslow foe) - flies through the air in an immense island
     contraption called the Sky City and kills U.S. sailors in the South
     Seas by dropping hollow ice cubes full of poison gas on them.
Dr. Centaur (Don Winslow foe) - inventor of the "paralysis ray ... the 
     weirdest weapon in the world".
Dr. Q (Don Winslow foe) - villain bent on destroying Panama Canal.
Dr. Thor (Don Winslow foe) - powers?
the Duchess (Don Winslow foe) - powers?
the Dwarf (Don Winslow foe) - criminal mastermind; main agents and assassins, 
     the Duchess and Dr. Thor.
Owl-eyes (Don Winslow foe) - powers? 
Scorpion (Don Winslow foe) - bald, cigar-smoking head of the secret 
     organization, Scorpia, which aims to take over the world.
the Spider (Don Winslow foe) - a sinister fakir.


Misc. Others
Dr. Eternity (Master #22; ? foe) - Nazi agent, Austrian hypno-therapists. 
Ghost of the Deep (America's Greatest Comics #1; ? foe) - Al Spriggins, radio 
     broadcaster for W.T.E.L., learned of z-metal and stole the formula while 
     killing the inventor; built small fleet of nearly indestructible tanks and 
     a suit of armor which he hid under his black robes and hood. 
Hangman (All Hero #1; ? foe) - skull mask which was illuminated by special 
     lights and a battery.
Mr. Alias (Marvel Family #90, unpublished, synopsis appears in Best of Alter
     Ego; Marvel Family foe) - Plastic Man-like changeability; earthquake gun.
Mr. Power (Marvel Family #26) - absorbs kinetic energy and becomes bigger
     and stronger the more he is hit.