Reaper Miniatures (
https://www.reapermini.com/)
*I've only gone through the Chronoscope line with this one, as I don't have have the time to go through all of the fantasy stuff that they make just now.
Horace "Action" Jackson - Black Dynamite (Black Dynamite)
The Black Mist - The Shadow (The Shadow)
Circus Ringmaster - Ringmaster (Marvel)
Lord of the Jungle - Ka-Zar/Kamandi (Marvel/DC)
Dee Dee, Astro Girl - Dale Arden (King Features)
Silver Marksman - Arrowette/Kate Bishop (DC/Marvel)
Blood Widow - Spider-Woman/Medusa (Marvel)
Frank Buck - Indiana Jones (Indiana Jones)
Incredible Woman - She-Hulk (Marvel)
Chan Li - Shang-Chi (Marvel)
Government Agents Smith and Jones - Men in Black (Malibu)
Lady Tiger - Tigra/Cheetah (Marvel/DC)
Slade, Cyborg - Cyborg/Deathlok (DC/Marvel)
Doctor Dread - Doctor Doom (Marvel)
General Drake - M Bison as portrayed by Raul Julia (Street Fighter)
Ebony Foxx - Misty Knight (Marvel)
Xian Lung - The Mandarin (Marvel)
Natalia - Black Widow (Marvel)
Torrent - Ice (DC)
Inferno - Fire (DC)
Dr Voodoo - Brother Voodoo (Marvel)
Merlock the Magnificent - Mandrake the Magician (King Features)
PB Pugh - Flash Gordon (King Features)
Blubbery Rand - Mr Fantastic/Plastic Man (Marvel/DC)
Afterburn - Iron Man (Marvel)
Lab Mutant - Hulk (Marvel)
Raptor - Angel (Marvel)
Uncle Sam - Uncle Sam (DC)
Cobra - Snake Eyes (GI Joe)
Kelly, Corp Assassin - Mercy Graves (DC)
Frank Russo - The Punisher (Marvel)
Max Decker - Mister A (Ditko)
The Fox - Zorro (Zorro)
Janus, Cybertech Hero - Hitman (DC)
Sasquatch - Sasquatch (Marvel)
Veronica Blaze - Agent 13 (Marvel)
On a related note, I have the "Hajad Pirate" mini as Captain Fate, for those who like super-obscure Marvel villains.