The Count Barzon version of Silencer first appeared in Marvel Premiere #49 and was created by Mark Evanier and Sal Buscema.

The Akyia Badaranaike version of Silencer was created by writer Peter B. Gillis and artist Brent Anderson and debuted in Strikeforce: Morituri #13 (December 1987), whereupon she joins the title cast until her death in issue #23.

The Dean Helm version of Silencer was a supervillain and made his first and only appearance in Hawkeye Vol.1 #2 (1983), created by Mark Gruenwald.

Accepting an assignment from the Bodavian Freedom Party, Count Barzon heads out to kill the outspoken and troublesome editorializer named Sigjid Roshkoff.

[1] Akiya Badaranaike lived a peaceful life in Africa, until the alien race known as the Horde declared war on Earth, frequently plundering its resources and periodically slaughtering or enslaving parts of the population.

Later, while in a refugee camp in Gabon, Akiya was tested and found genetically eligible to undergo the elite Morituri process.

The powers came at a terrible price, however: the recipients were aware they would die within a year of receiving it, owing to a fatal flaw to it that made it unstable.

Nevertheless, Akiya enthusiastically underwent the process and emerged with the ability to psychically break down sound waves, thus producing silence.

The fight proved unusually easy, and Hardcase decided to exit the factory and hunt down some of the fleeing Hordians, taking Silencer along with him.

As they exited hand-in-hand, however, the Hordians from a ship above activated a microwave cannon which incinerated both Hardcase and Silencer, leaving behind their charred skeletons.

Later that night, Hawkeye and Mockingbird broke into Cross Technological Enterprises to try to find incriminating evidence, but were interrupted by Silencer.

[8] The Silencer is an unnamed mob enforcer who joined some gang members into looking for the evidence that linked the crime boss Alphonse Scarpetti to the courthouse killings.

They start by tracking down Sam "Big Bear" Lincoln who used to be a boxer and mob enforcer and now works as a janitor at the Hayden Planetarium.

Upon tracing the information the Hayden Planetarium, Spider-Man and Elektra started looking until they ran into Silencer who was posing as a part of the black hole mural.

The mob enforcer version of Silencer has super-strength, teleportation, and a body composed of an unnamed murky substance which left him invulnerable and enabled him to shapeshift.