Other Golden Age Villains
The Crime League
The original Crime League was founded in 1942 in response to the presence of the Liberty League, when American super-criminals banded together for mutual protection and assistance, forming the first true super-villain team. The original Crime League included the ice-wielding Dr. Zero, the mind-controlling Gepetto, Magnifico the Magician (who combined stage-magic tricks with true sorcery), the hulking swamp creature Tom Cyprus, and the mysterious and seductive Opal, wielder of a stolen mystic gem. Later additions included August Roman, the Maestro, King Cole, and others. The Crime League ,s operations ranged from simple theft (bank heists and such) to complex schemes such as counterfeit ration coupons or blackmailing the government with stolen super-weapons.

The Grue Unity
The Grue were not active on Earth until the 1950s. A Grue scout vessel crashed in the American southwest in 1947 after a skirmish with the Lor in local space. The remains of the vessel and crew were taken into government custody, drawing the Unity ,s attention. Grue agents arrived on Earth by 1950, infiltrating American society and government. Although the Liberty League helped to root out the &silent invasion 8 of shapeshifters, the Grue presence contributed greatly to the &Red Scare 8 of the +50s and casts suspicion on America ,s heroes (just as the Unity intended). Neither the Lor nor the Star Knights are active on Earth until after the first Grue invasion attempt.

The Invisible Empire
A powerful criminal conspiracy, the so-called Invisible Empire sought to overthrow the United States government and replace it with a fascist regime. Despite its goals, the Invisible Empire was in no way connected with the Nazis or the Axis powers; indeed, it saw them as rivals for its inevitable domination over the world. Most Invisible Empire schemes involved the development of super-weapons or the use of terrorism to blackmail the government. The organization was significantly diminished by the 1950s, although in truth many of its members simply went underground. The remnants of the Invisible Empire were later absorbed by the growing influence of SHADOW in the underworld.

Myconids, The Mushroom Men from Venus
The so-called &Mushroom Men 8 were not actually from Venus, or even Earth ,s solar system. The Mycanoids (the scientific name applied to them; their actual name is unpronounceable by humans) were a form of humanoid fungal life. They propagated using spores spread on the solar winds, infesting suitable planets and eventually consuming all life there. Mycanoids relied on their numbers, their fungal physiology (granting them great resistance to injury), and their biological ability to produce various spore-clouds to deal with any native life that may threaten their colonization. A Mycanoid colony from Venus infested Earth for a time before the Liberty League managed to eradicate them. Their technology was organic in nature, &grown 8 from the same materials as their bodies, and they lacked spaceships, crossing the void of space as spore-pods to invade new worlds.

The Widow
The mysterious and deadly spy known only as the Widow operated as an agent of the Axis powers during the Second World War and as a free agent thereafter. The Widow claimed to be of Italian origin, although she said the she held no loyalty to any flag or nationality. An expert in disguise, she always wore a dark veil while unmasked and favored black clothing whenever possible. She often implied that her husband was also a spy, killed by agents of the American government. Her most frequent foe during the war was Kilroy, but she also ran afoul of Patriot and later AEGIS during the Cold War. The Widow is believed to have died while working for the Russian government in the early 1970s.

Alien-Gator
Freedom Eagle fought a creature like a humanoid alligator he dubbed the &Alien-Gator 8 in the South River Swamp in 1950. It ,s unknown if the savage creature truly was an alien life form or some earthly mutant, either of human or reptile stock. The Alien-Gator savagely attacked anyone entering its territory and hunted humans as prey. It was believed dead after its last fateful encounter with Freedom Eagle.