Bullseye is a character who has a vendetta against the superhero appearing in comics by which company?
Marvel
Title: Charlton Bullseye (comics)
Passage: Charlton Bullseye was the title of a short-lived Charlton Comics showcase comic book series published from June 1981 through December 1982.  Several new stories using Charlton's "Action Heroes" appeared, before they were sold to DC Comics in 1983.  After the cancellation of "Charlton Bullseye", stories intended for the title were published in "Scary Tales" #36–40, which explains the superhero story "Mr. Jigsaw" in issue #38 and "Dragon Force" in issue #40.  Several other unpublished stories for the title were published by AC Comics.
Title: Daredevil (Marvel Comics character)
Passage: Daredevil is a fictional superhero appearing in American comic books published by Marvel Comics.  Daredevil was created by writer-editor Stan Lee and artist Bill Everett, with an unspecified amount of input from Jack Kirby.  The character first appeared in "Daredevil" #1 (April 1964).  Writer/artist Frank Miller's influential tenure on the title in the early 1980s cemented the character as a popular and influential part of the Marvel Universe.  Daredevil is commonly known by such epithets as the "Man Without Fear" and the "Devil of Hell's Kitchen".
Title: Bullseye (comics)
Passage: Bullseye (Lester) is a fictional character appearing in American comic books published by Marvel Comics.  A psychopathic assassin, Bullseye uses the opportunities afforded by his line of work to exercise his homicidal tendencies and to work out his own personal vendetta against Daredevil.
Daredevil (Marvel Comics character) Bullseye (comics)