Police who patrol the Quiet.

Evil organization led by M. Bison

The Super Human Advanced Defense Executive.

The most terrible being living in the Dreamscape. Shades are the lost souls of Dreamers who died in their sleep, now forever floating through the Dreamscape. They're trying to find a way out that they'll never find.

The Shades are a group of spirits who take over the bodies of humans and expels the original spirits of the humans.

Also known as United States Hulk Operations was a clandestine U.S. Military organization tasked with hunting down the Hulk and his allies.

A clandestine and secretive team of superheroes originally of Milestone Media. Their primary purpose was "to save humanity from itself—no matter what". Very often, this meant amoral cloak & dagger operations and ruthlessly eliminating whatever threats to humanity that they perceived.

A network of informants working for Moon Knight

Some people who had lost mutant powers on M-Day and were granted Captain Britain-like powers.

A clandestine organization led by Aloysius Thorndrake.

A cover team of heroes who deal with more dark menaces and are used for undercover missions.

Shadow Demons are the elite, hand-picked Thunderers in the Anti-Monitor's forces. Only the most evil of his servants, composed of nearly pure anti-matter, are chosen.

A group of heroes brought together to face Eclipso

Super-powered operatives mutated by US government, fought Spider-Man and X-Factor.

Team of supervillains who once opposed Tommy Monaghan. Sadly, they didn't even had a chance to show their strength.

Paramilitary team of mercenaries, sent against hospitalized foreign ruler, opposed by Scarlet Spider and Strongarm.

Mysterious, powerful beings behind Stormwatch. They select the team's leader.

A varied group of special forces whom work stealthlike in the shadows.

A gang active in the post apocalyptic wasteland of the 2050s in the Valiant Universe. The Shadowmen emerged after "The Shadow Invasion" - they may dress and look like Jack Boniface, the former Shadowman, however, they are just a "whackadoo cult."

Group of magic-aligned characters most notable for fighting the Spectre during the events of Day of Vengeance.

The Shadow Players are a group of Fables secret spies.

The Shadow people are a race of aliens who were marooned on Sakaar millennia ago. The Shadow People (or Old Strong) have an ability to tap into a planets energy and utilize it to boost their strength, speed, durability and give them Earth Manipulation abilities.

The shadow stormtroopers, sometimes called Blackhole stormtroopers, were specialized Imperial stormtroopers and were the successors of the Republic's clone shadow troopers.

Agents of Atlas enemies created by Karl von Horstbaden. They were once alive, but now they are just dark shadows who's only weakness is light.

Dark evil versions of the original X-Men from an alternate time line. They are led by Scicluna now that their mentor, a dark Professor X controled by the Shadow King has been killed.

Elite orcish poison throwers.

A group of mercenaries in science and violence, trained in the Shaolin martial arts.

The elite secret police of K'un-Lun.

The Shaper's Guild are a branch of the Kheran race and a faction within the ranks of the Kherubim empire.

Disciples of the Prince. They can take on several shapes.

Shark-human hybrids.

A variety of ocean predatory fish.

Shatterforce is a team consisting of Warhead, Murder and Strangler. They are sent by the Consortium to eliminate Nova. They possessed cybernetically enhanced abilities and were fitted with armor composed of the highly unstable alloy known as Carbonadium.

The Conclave of S.H.A.Z.A.M., the six gods that grant their innate abilities to The Champion of The Rock of Eternity.

A Pre-Crisis super team. The union of earth-S champions.

Race of fairies from the distant future that travel through time to periods of utopia to prey upon human civilizations.

To defend Europe from Internal and External Threats

A female team of Avengers of the United States of Amazonia. The members consist of Emma Frost, Mary Jane, X-23, and Susan Storm.

The Shi'ar are an alien race of avian descent and one of the most powerful empires in space.