A group of villains that has taken several forms over the years, each iteration equally dedicated to the destruction of the Avengers. The Lethal Legion was first formed by the Grim Reaper to destroy the Avengers. The other members included Man-Ape, Swordsman, Power Man and the Living Laser. Man-Ape defeated Black Panther in combat and kidnapped his fiancee Monica Lynne. He took them to a secret chamber where he was held captive and met the rest of the Lethal Legion. Grim Reaper gathered his associates because they all had a deep hatred for the Avengers and had plans to eliminate them once and for all. The Grim Reaper sent his Lethal Legion to the water main that ran beneath the Avenger's Mansion and a nearby power station to ambush the Avengers. Black Panther escaped from his shackles and warned the Avengers of a possible trap but is eventually taken down in combat by the Grim Reaper. Goliath and the Scarlet Witch would come into conflict with the Swordsman and Power Man at the water main but they are defeated. Captain America and Quicksilver come into conflict with Man-Ape and the Living Laser at the power station but they also fall in combat as well. The fallen Avengers are held captive inside a giant hourglass that begin to fill up with deadly vapors. Power Man appears with a fallen Vision and places him inside the hourglass and hands the Grim Reaper personal files on the Avengers. Grim Reaper reads the file on the Vision and discovered that his brother's brain patterns was preserved to become the mental basis for the Vision. The Grim Reaper shatters the hourglass with his scythe to save his brother but they realize that the Vision inside was really Power Man and that the android had traded places with his enemy. The Avengers are free and they defeat all the members of the Lethal Legion.
Group Incarnations:
Lethal Legion (Grim Reaper)
Lethal Legion (Count Nefaria)
Lethal Legion (Porcupine)
Lethal Legion (Satannish)
Lethal Legion (Challenger)
