Slaymaster first encountered Captain Britain while carrying out a series of assassinations (he was killing collectors and stealing valuable items from their collections for a man named Konrad Kharpov), managing to defeat the Captain several times before seemingly being eaten by sharks after an encounter at sea. At this time, he displayed a talent for disguise and also a macabre sense of humor, killing his victims with weapons appropriate to their names
Later, having escaped the sharks, a more skillful and refined Slaymaster was hired by the Vixen (a British villain and old enemy of Captain Britain) to kill all of the members of S.T.R.I.K.E.'s psi-division, including Captain Britain's sister, before her planned infiltration of the intelligence's facility. Slaymaster managed to kill seven of the ten members of the Psi-Division, including Doctor Destiny, Vicki Reppion, and Avril Davis. Alison Double, Tom Lennox, and Betsy Braddock (Captain Britain's sister and Lennox's lover), were able to survive and escape to the safety of Braddock Manor.
Captain Britain's intervention on behalf of his sister resulted in a rematch between himself and Slaymaster; a tightly run affair in which Slaymaster proved his intelligence, weapons, and martial skill would be enough to defeat the more powerful Captain again. However, thanks to a distraction by Betsy, Captain Britain was able to overwhelm Slaymaster and beat him into unconsciousness.
Still in the employ of Vixen, Slaymaster was to bring Captain Britain to her. Slaymaster managed to capture the Captain and steal the costume he thought to be the source of Captain Britain's powers. Captain Britain was still able to control the suit telekinetically, ramming Slaymaster into a wall and knocking him out.
In their final meeting, Betsy Braddock, Captain Britain's twin sister had assumed the mantle of Captain Britain while her brother was elsewhere. Her taking up the role was, in fact, a trap set by Vixen.
Wearing a Vixen-supplied version of Captain Britain's costume, Slaymaster confronted Captain Britain and defeated Betsy Braddock by gouging out her eyes. Betsy managed a telepathic summons to her brother, who flew to rescue her and confronted Slaymaster. Slaymaster soon discovered that the costume that Captain Britain wore was, in fact, little more than a regulatory device - his powers were intact without it. In a fit of rage, the Captain defeated Slaymaster and killed him, crushing his head with a boulder.
Powers and Abilities
Slaymaster is a master hand-to-hand combatant and a world class assassin, on various occasions, he is depicted as having more than normal balance and reflexes. His preferred weapons are specialized high-tech needles that he can shower assailants with a deadly barrage of projectiles.
Slaymaster possessed the strength of a man who engaged in intense regular exercise to keep his body in a fit muscular condition.
'Atomic Wristlets' which increased his strength; later, a sophisticated power enhancing suit based on that worn by Captain Britain.
Jet Pack, 'Atomic Powered Racer'
- 17 appearance(s) of Slaymaster (Earth-616)
- 5 minor appearance(s) of Slaymaster (Earth-616)
- 3 mention(s) of Slaymaster (Earth-616)
- 14 image(s) of Slaymaster (Earth-616)
- 3 quotation(s) by or about Slaymaster (Earth-616)
- 1 victim(s) killed by Slaymaster (Earth-616)