Nightmare appears in 309 issues.
Aarkus was once the Golden Age villain-turned-hero called The Vision, whose people came to our reality to serve as midwives to beings born from Cosmic Cubes.
Aleta Ogord was an Arcturan alien raised by her father, Ogord.
Nightmare is the ruler of the dream dimension and a co-creator of the Fear Lords.
Foe of Dr. Strange and various mystical fighting heroes, Nightmare is a demon who can manifest a victims worst fears while enslaving them or feeding off their spiritual energies while asleep-if not comatose. Has battled many heroes of the Marvel Universe inclusive Black Panther.
Nightmare made Brad and Roger sleep in order to attack their mistress, Amanda Sefton.
During World War II, Steve Rogers volunteered to receive the experimental Super-Soldier Serum. Enhanced to the pinnacle of human physical potential and armed with an unbreakable shield, he became Captain America. After a failed mission left him encased in ice for decades, he was found and revived by the Avengers. Later joining their ranks and eventually becoming the team's leader.
Clea is the daughter of Umar and has been the ruler of the Dark Dimension.
Tyrone Johnson is the "dark" half of the vigilante duo known as Cloak and Dagger. After a drug-related experiment awakened his powers, he became a living personification of darkness. Cloak is the Yin to his partner Dagger's Yang. Superheroes of the streets, Cloak and Dagger wage a war against dangerous drugs and drug-related crimes.
Cloud 9 was recruited by War Machine into The Initiative, and she has the ability to fly on what appears to be a chemical-based cloud.
D'Spayre is a 20,000 year old creation of the Fear Lord called Dweller in Darkness. Since then he has tortured Humanity, instilling fear and despair wherever he goes.
Tandy Bowen is the "light" half of the vigilante duo known as Cloak & Dagger. After a drug-related experiment awakened her powers, she became a living personification of light, with the ability to generate super-luminosity at will and use it both offensively and defensively.
Traveling companion of the Silver Surfer and most important person in the universe.
A mutant with the ability to transduce sound into light, which often forces her into reluctant superheroism. She is also a very gifted singer and performer, hence her reservations in donning her uniform.
An extradimensional demon of origins unknown and realm unspecified. Nightmare is a predator who suffices on fear and absorbs lifeforces or gains human slaves within their dreams less he kills them. Able to will select sleeping victims into an extradimensional mindscape and alter their dreams into terrifying reality. Nightmare is a prime foe to hero Dr. Strange among others.
Demon of the Realm of Madness ,has a triple complex Asphyxias Dyslexia .
Gamma-irradiated friend, rival, and psychiatrist of Bruce Banner. Once possessing the superhuman strength equivalent to a relatively calm Hulk, Leonard is now more powerful than ever as his darker alter-ego Samson. Incalculable strength, virtually limitless endurance and an extremely high degree of durability.
He made enemies of Doom, Wolverine and Ghost Rider (Dan Ketch) in Marvel Comics Presents #100.
Nightmare is the ruler of the dream dimension.
Magic User that can alter reality
A Marvel Universe demon. He is the Ruler of the "Realm of Madness", a dimension which grants him access to minds of the insane. He has similar powers to his archenemy Nightmare. Dusk can transform to anything an insane mind could think of. He can also transform the fears of the insane minds into material form. He can manipulate the insane, using the thoughts of their own minds. When they hear voices, its his voice they listen to.
The Dweller In Darkness is an incredibly powerful demon who originates from a dimension that is said to be higher than the sixth dimension. He was responsible for assembling the Fear Lords.
Eddie Brock bonded to the alien symbiote after it was discarded by Spider-Man, becoming the first Venom. Brock was later Anti-Venom, but the symbiote was lost during Spider-Island. Brock has also been forcibly bonded to the Toxin symbiote by the Crime Master, but has reluctantly given it up to stop Carnage. He has recently been rebonded with Venom.
The Enchantress defeated Nightmare in order to save Heimdall
Eternity is an abstract, relatively omnipotent entity representing all time and reality in the universe. Eternity has been around before the beginning of the universe. He is eternal.
Twin sister of Dawn Greenwood. She has an acute case of wanderlust.
Citizen of the Realm of Exiles
Johnny Blaze, a motorcycle stuntman, became bound to the Spirit of Vengeance known as Zarathos after making a deal with Mephisto to spare the life of his surrogate father. With the power to control hellfire and to inflict pain on those he deems evil with his Penance Stare, Johnny seeks vengeance as Ghost Rider.
Ensnared in one of his schemes along with Wolverine and Doctor Doom.
Keeper to the Bifrost (Rainbow) Bridge linking Asgard and Midgard (Earth).
Hercules encounterd and battled the demon Nightmare during his journey through the 'dreamtime' from Earth to the home of the Skrull gods. Nightmare attempted to feast upon the fears of Hercules and his group of godly beings (the God Squad) in return for his help in navigating through the dreamtime. Hercules was able to thwart Nightmare's plans, break free from his clutches and save his fellow comrades while also regaining the means of navigating the dreamtime. Doing this earned Hercules the enmity of Nightmare, who later hired Arcade to annoy and torture the Prince of Power.
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