Halothair's Amalgam Universe

Thor-El (Thor/Superman)

Dark Spider (Spider-Man/Batman)

Captain Amazon (Captain America/Wonder Woman)

Ms. Power/Captain Power (Carol Danvers/Power Girl)

Silver Lantern (Silver Surfer/Green Lantern Hal Jordan)

Mercury (Iron Man/Flash Barry Allen)

Gamma (Hulk/Firestorm)

Ocean Bolt (Black Bolt/Aquaman)

Marvelman (Captain Mar-Vell/Earth 2 Superman)

Adam Shazam (Adam Warlock/Shazam)

Mary Kismet (Kismet/Mary Marvel)

Super-Martian (Super-Skrull/Martian Manhunter)

Atom Man (Ant-Man Hank Pym/Atom Al Pratt)

Mini (Wasp/Mary James-Pratt)

Black Eagle (Black Panther/Hawkman)

Thunderhawk (Storm/Hawkgirl)

(Quicksilver/Zachary Zatara?)

Silver Witch (Scarlet Witch/Zatanna Zatara)

The Glimpse (Vision/Red Tornado)

Ordax the Obliterator (Drax the Destroyer/Orion the Hunter)

Longbow (Hawkeye/Green Arrow)

Black Starling (Black Widow/Black Canary)

Dr. Stranger (Dr. Strange/Phantom Stranger)

(Jocasta/Red Torpedo)

Victor Von Luthor (Dr. Doom/Lex Luthor)

Le-Roht (Ragnarok/Bizarro)

Ultriac (Ultron/Brainiac)

Toysmith (Machinesmith/Toyman)

Pseudonymous (Chameleon/Riddler)

Feario (Mysterio/Scarecrow)

Lioness (Sabretooth/Cheetah Barbara Minerva)

Atlanta (Atlas/Giganta)

Captain Bliz (Blizzard/Captain Cold)

Man-Gorilla (Man-Ape/Gorilla Grodd)

Sinestilus (Annihilus/Sinestro)

Aberration (Abomination/Solomon Grundy)

Black Ray (Stingray/Black Manta)

More to be added...