The Lethal Legion is a team of fictional characters that appear in comic books published by Marvel Comics.
The first version of the Legion appears in The Avengers #78 (Jul. 1970); the second version in Avengers #164 (Oct. 1977); the third version in West Coast Avengers vol. 2, #1 (Oct. 1985); the fourth Avengers West Coast #98 (Sep. 1993) and the final version in the limited series Dark Reign: Lethal Legion #1 (Aug. 2009). The teams were created by Roy Thomas and John Buscema; Jim Shooter and various artists; Steve Englehart and Al Milgrom; Roy Thomas and Tim Dzon; and Frank Tieri and various artists respectively.
Grim Reaper's Lethal Legion
Avengers #78–79 (Jul.–Aug. 1970)
- Grim Reaper: Madman with a hand replaced by a scythe that harbours powerful technology.
 - Living Laser: An inventor of highly advanced lasers.
 - Man-Ape: One of Wakanda's greatest warriors who performed a forbidden ritual that gave him superhuman strength.
 - Power Man (Erik Josten): Gained superhuman strength and durability due to an ionic ray.
 - Swordsman (Jacques Duquesne): A master swordsman with different weapons in his sword.
 
Count Nefaria's Lethal Legion
Avengers #164–166 (Oct.–Dec. 1977)
- Count Nefaria: A crime lord and one of the world's wealthiest men.
 - Living Laser
 - Power Man (Erik Josten)
 - Whirlwind: A mutant who can rotate his body at superhuman speed.
 
Grim Reaper's second Lethal Legion
West Coast Avengers vol. 2, #1–2 (Oct.–Nov. 1985)
- Grim Reaper
 - Black Talon: A voodoo sorcerer who can create and control zombies.
 - Goliath (Erik Josten): A man who can grow up to 60 ft.
 - Man-Ape
 - Nekra: A death-spirit.
 - Ultron: A powerful and intelligent robot.
 
Porcupine's Lethal Legion
Marvel Age Annual #1 (1985)
- Attuma: An Atlantean barbarian.
 - Batroc the Leaper: A skilled French combatant.
 - Beetle: An engineer who invented a battle suit that enables flight and has other functions.
 - Black Tiger
 - Kurr'fri: A member of the Saurians that Ms. Marvel had encountered.
 - Gorilla-Man
 - Piledriver
 - Porcupine: A criminal with a battle suit based on a porcupine.
 - Sabretooth: A beast-like mutant.
 - Thundra: A super-strong woman.
 - Trapster: A criminal skilled with adhesives.
 - Unicorn
 - Whirlwind
 - Wrecker: A criminal with an enchanted crowbar giving him superhuman strength.
 
Satannish's Lethal Legion
Avengers West Coast #98–100 (Sep.–Nov. 1993)
- Hangman (Jason Roland)
 - Axe of Violence: A demonically-enhanced Lizzie Borden with an axe replacing one hand.
 - Coldsteel: A demonically-enhanced Josef Stalin, now an 8 ft. giant with superhuman strength.
 - Cyana: A demonically-enhanced Lucrezia Borgia with poisoned claws.
 - Zyklon: A demonically-enhanced Heinrich Himmler who can belch deadly gas fumes from his mouth.
 
Grim Reaper's third Lethal Legion
Dark Reign: Lethal Legion #1–3 (June–Aug. 2009)
- Grim Reaper
 - Nekra
 - Absorbing Man: A thug who was given a potion enabling him to absorb the properties of whatever he touched.
 - Grey Gargoyle: A French chemist who can turn people to stone for an hour by touching them.
 - Tiger Shark: A criminal with the DNA of a shark.
 - Mister Hyde: A scientist who developed a formula that gives him superhuman strength.
 - Wonder Man: Given superhuman strength and durability by an ionic ray.
 
Grandmaster's Lethal Legion
Avengers #676 (Jan. 2018)
- Blood Brothers: Two Roclites.
 - Captain Glory: A Kree who was a captain in the Kree Armada.
 - Drall: An Endrionic gladiator.
 - Mentacle: A Rigellian with four tentacles for legs who has psychic abilities.
 - Metal Master II: An Astran who admired the works of his predecessor.
 - The Other: An unspecified alien.
 
Count Nefaria's second Lethal Legion
Amazing Spider-Man Vol. 5 #41 (March 2020)
Other media
The Super Hero Squad Show version
The following are members of the Lethal Legion in The Super Hero Squad Show and its related media:
- Doctor Doom (leader)
 - Abomination
 - Absorbing Man
 - AIM Agents
 - Baron Mordo
 - Batroc the Leaper
 - The Blob
 - Crimson Dynamo
 - Doctor Octopus
 - Doombots
 - Dormammu
 - Egghead
 - Enchantress
 - Fin Fang Foom
 - Grogg
 - Groot
 - Impossible Man
 - Juggernaut
 - Klaw
 - Loki
 - Magneto
 - Manoo
 - Megataur
 - Melter
 - MODOK
 - Mole Man
 - Molecule Man
 - Moloids
 - Mystique
 - Plantman
 - Pyro
 - Quasimodo
 - Red Skull
 - Ringmaster
 - Sabertooth
 - Screaming Mimi
 - Sentinels
 - Stilt Man
 - Super-Skrull
 - Skurge
 - Tiger Shark
 - Titanium Man
 - Toad
 - Trapster
 - Tricephalous
 - Volcana
 - Whiplash
 - Whirlwind
 - Wrecking Crew
 - X the Unknownable
 - Ymir
 - Zzzax