Question: This character appeared in comics published by Marvel, one of his adversaries were Flag-Smasher and was created by Rob Liefeld. Who was the other creatore of this character?

full_context: Document 1: Deadpool: Deadpool (Wade Winston Wilson) is a fictional antihero appearing in American comic books published by Marvel Comics. Created by artist/writer Rob Liefeld and writer Fabian Nicieza, the character first appeared in "The New Mutants" #98 (cover-dated February 1991). Initially Deadpool was depicted as a supervillain when he made his first appearance in "The New Mutants" and later in issues of "X-Force", but later evolved into his more recognizable antiheroic persona. Deadpool, whose real name is Wade Wilson, is a disfigured and mentally unstable mercenary with the superhuman ability of an accelerated healing factor and physical prowess. The character is known as the "Merc with a Mouth" because of his talkative nature and tendency to break the fourth wall, which is used by writers for humorous effect and running gags.
Document 2: Captain America's shield: Captain America's shield is a fictional item appearing in American comic books published by Marvel Comics. It is the primary defensive and offensive piece of equipment used by the Marvel Comics superhero Captain America; he is seldom seen without it. Over the years, Captain America has had the use of several different shields of varying composition and design. His original heater shield first appeared in "Captain America Comics" #1 (March 1941), published by Marvel's 1940s predecessor, Timely Comics. The circular shield best associated with the character debuted in the next issue, "Captain America Comics" #2. Captain America was created by the team of writer-artist Joe Simon and artist Jack Kirby.
Document 3: Deadpool (film): Deadpool is a 2016 American superhero film based on the Marvel Comics character of the same name, distributed by 20th Century Fox. It is the eighth installment of the "X-Men" film series. The film was directed by Tim Miller from a screenplay by Rhett Reese and Paul Wernick, and stars Ryan Reynolds in the title role alongside Morena Baccarin, Ed Skrein, T. J. Miller, Gina Carano, Leslie Uggams, Brianna Hildebrand, and Stefan Kapičić. In "Deadpool", Wade Wilson hunts the man who gave him mutant abilities, but also a scarred physical appearance, as the antihero Deadpool.
Document 4: Crusaders (Marvel Comics): The Crusaders is a group of fictional characters appearing in American comic books published by Marvel Comics. The characters first appear in "The Invaders" #14 (March 1977) and were created by Roy Thomas, Jack Kirby, and Frank Robbins.
Document 5: Crossbones (comics): Crossbones (Brock Rumlow) is a fictional supervillain appearing in American comic books published by Marvel Comics, usually depicted as an adversary of the superhero Captain America. Created by writer Mark Gruenwald and artist Kieron Dwyer, the character first appeared in "Captain America" #359 (October 1989). Crossbones usually appears as an ally of the Red Skull. He carried out the assassination of Captain America, although a hypnotized Sharon Carter is believed to have fired the fatal shots.
Document 6: List of box office records set by Deadpool (film): "Deadpool" is a 2016 American superhero film based on the Marvel Comics character of the same name, distributed by 20th Century Fox. It is the eighth installment of the "X-Men" film series. The film was directed by Tim Miller from a screenplay by Rhett Reese and Paul Wernick, and stars Ryan Reynolds in the title role alongside Morena Baccarin, Ed Skrein, T. J. Miller, Gina Carano, Leslie Uggams, Brianna Hildebrand, and Stefan Kapičić. In "Deadpool", Wade Wilson hunts the man who gave him mutant abilities, but also a scarred physical appearance, as the wisecracking, fourth wall-breaking antihero Deadpool.
Document 7: List of accolades received by Deadpool (film): "Deadpool" is a 2016 American superhero film based on the Marvel Comics character of the same name, distributed by 20th Century Fox. It is the eighth installment of the "X-Men" film series. The film was directed by Tim Miller from a screenplay by Rhett Reese and Paul Wernick, and stars Ryan Reynolds in the title role alongside Morena Baccarin, Ed Skrein, T. J. Miller, Gina Carano, Leslie Uggams, Brianna Hildebrand, and Stefan Kapičić. In "Deadpool", Wade Wilson hunts the man who gave him mutant abilities, but also a scarred physical appearance, as the wisecracking, fourth wall-breaking antihero Deadpool.
Document 8: List of Spider-Man enemies: Spider-Man is a fictional superhero in the Marvel Universe debuting in the anthology comic book series issue "Amazing Fantasy" #15 (August 1962) in the Silver Age of Comics published by Marvel Comics. After his debut he would get his own comic book entitled "The Amazing Spider-Man". The comic book series would introduce many of what would become his major supervillain adversaries. Spider-Man would then be popular enough for more Spider-Man comic spinoffs ("The Spectacular Spider-Man", "Marvel Team-Up", "Web of Spider-Man", "" etc.) which introduced more recurring enemies of the web-slinger.
Document 9: Cable (comics): Cable (Nathan Summers) is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with X-Force and the X-Men. The character first appeared as a newborn infant in "Uncanny X-Men" #201 (Jan. 1986) created by writer Chris Claremont, while Cable's adult identity was created by writer Louise Simonson and artist/co-writer Rob Liefeld and first appeared in "The New Mutants" #87 (March 1990).
Document 10: Captain America: Captain America is a fictional character appearing in American comic books published by Marvel Comics. Created by cartoonists Joe Simon and Jack Kirby, the character first appeared in "Captain America Comics" #1 (cover dated March 1941) from Timely Comics, a predecessor of Marvel Comics. Captain America was designed as a patriotic supersoldier who often fought the Axis powers of World War II and was Timely Comics' most popular character during the wartime period. The popularity of superheroes waned following the war and the "Captain America" comic book was discontinued in 1950, with a short-lived revival in 1953. Since Marvel Comics revived the character in 1964, Captain America has remained in publication.
Document 11: Ghost Rider: Ghost Rider is the name of many fictional supernatural antiheroes appearing in American comic books published by Marvel Comics. Marvel had previously used the name for a Western character whose name was later changed to Phantom Rider.
Document 12: Doctor Doom: Doctor Victor Von Doom (or simply Doctor Doom) is a fictional supervillain appearing in American comic books published by Marvel Comics. The son of Romani witch Cynthia Von Doom, Doctor Doom traditionally has been the archenemy of the Fantastic Four, and the leader of the fictional nation of Latveria. He is both a genius inventor and a sorcerer. While his chief opponents have been the Fantastic Four, he has also come into conflict with Iron Man, Spider-Man, Black Panther, the Avengers and multiple others. Doom has been depicted as a superhero, taking up the mantle of Iron Man from Tony Stark, and going on to join the Avengers.
Document 13: Punisher: The Punisher (Francis "Frank" Castle) is a fictional character appearing in American comic books published by Marvel Comics. The character was created by writer Gerry Conway and artists John Romita Sr. and Ross Andru, with publisher Stan Lee green-lighting the name. The Punisher made his first appearance in "The Amazing Spider-Man" #129 (cover-dated Feb. 1974).
Document 14: Flag-Smasher: The Flag-Smasher is the name used by two fictional supervillains appearing in American comic books published by Marvel Comics. The original was most often a foe of Captain America while other adversaries of the Flag-Smasher include The Punisher, Moon Knight, Ghost Rider, The Runaways, The Liberteens and Deadpool.
Document 15: Wolverine (character): Wolverine (born James Howlett commonly known as Logan and sometimes as Weapon X) is a fictional character appearing in American comic books published by Marvel Comics, mostly in association with the X-Men. He is a mutant who possesses animal-keen senses, enhanced physical capabilities, powerful regenerative ability known as a healing factor, and three retractable bone claws in each hand. Wolverine has been depicted variously as a member of the X-Men, Alpha Flight, and the Avengers.
ground_truth: Fabian Nicieza