Question: Who is a supervillain by Marvel Comics that leads the Reavers?

full_context: Document 1: X-Men: Days of Future Past: X-Men: Days of Future Past is a 2014 American superhero film based on the fictional X-Men characters that appear in Marvel Comics. Directed by Bryan Singer, it is the seventh installment of the "X-Men" film series and acts as a sequel to both 2006's "" and 2011's "". The story, inspired by the 1981 "Uncanny X-Men" storyline "Days of Future Past" by Chris Claremont and John Byrne, focuses on two time periods, with Wolverine traveling back in time to 1973 to change history and prevent an event that results in doom for both humans and mutants. The film features an ensemble cast, including Hugh Jackman, James McAvoy, Michael Fassbender, Jennifer Lawrence, Halle Berry, Anna Paquin, Ellen Page, Peter Dinklage, Ian McKellen and Patrick Stewart. Simon Kinberg wrote the screenplay from a story conceived by Jane Goldman, himself, and Matthew Vaughn.
Document 2: 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.
Document 3: The Wolverine (film): The Wolverine is a 2013 superhero film featuring the Marvel Comics character Wolverine. The film, distributed by 20th Century Fox, is the sixth installment in the "X-Men" film series. Hugh Jackman reprises his role from previous films as the title character, with James Mangold directing a screenplay written by Scott Frank and Mark Bomback, based on the 1982 limited series "Wolverine" by Chris Claremont and Frank Miller. In the film, which follows the events of "", Logan travels to Japan, where he engages an old acquaintance in a struggle that has lasting consequences. Stripped of his healing factor, Wolverine must battle deadly samurai while struggling with guilt.
Document 4: 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 5: Cameron Hodge: Cameron Hodge is a fictional supervillain appearing in American comic books published by Marvel Comics. The character is usually depicted as an opponent of the X-Men. Created by writer Bob Layton and artist Jackson Guice, he first appeared as a supporting character in "X-Factor" #1 (February 1986) Later, under writer Louise Simonson, he was revealed to be secretly acting against X-Factor as the leader of an anti-mutant Right organization. After being decapitated, his head was later revealed to have been attached to a large cyborg, and later merged with the cybernetic extraterrestrial Phalanx race.
Document 6: Cerebro's X-Men: Cerebro's X-Men are a fictional team of supervillains appearing in American comic books published by Marvel Comics. The characters appeared in both the "Uncanny X-Men" and "X-Men" series. They were created and designed by Spanish artist Carlos Pacheco but he officially drew them just once in the cover of "Uncanny X-Men" No. 360 (1998). The interior art of this issue was done by Chris Bachalo.
Document 7: Mastermind (Jason Wyngarde): Mastermind (Jason Wyngarde) is a fictional supervillain appearing in American comic books published by Marvel Comics. He most often appears as an adversary of the X-Men. The original Mastermind was a mutant with the psionic ability to generate complex telepathic illusions at will that cause his victims to see whatever he wishes them to see. He was a founding member of the first Brotherhood of Evil Mutants and later a probationary member of the Lords Cardinal of the Hellfire Club, where he played an important role in ""The Dark Phoenix Saga"."
Document 8: Juggernaut (comics): Juggernaut (Cain Marko) is a fictional supervillain appearing in American comic books published by Marvel Comics. The character, who first appeared in "X-Men" #12 (July 1965), was created by writer Stan Lee and artist/co-writer Jack Kirby. He is the stepbrother of Professor X.
Document 9: Reavers (comics): The Reavers are a fictional team of criminal cyborgs appearing in American comic books published by Marvel Comics. The most significant team of Reavers were dedicated to the destruction of the mutant X-Men, and a number of them especially wanted to take revenge on one particular X-Man, Wolverine. The name was originally used by a gang of Australian cyborgs. The name later referred to a group under the leadership of Donald Pierce, consisting of the three survivors from the original Reavers along with other cyborgs.
Document 10: Donald Pierce: Donald Pierce is a fictional supervillain appearing in American comic books published by Marvel Comics. The character is depicted as a cyborg and is commonly an enemy of the X-Men.
Document 11: Cyber (comics): Cyber is a fictional supervillain appearing in American comic books published by Marvel Comics. The character is depicted usually as an enemy of Wolverine of the X-Men. Created by writer Peter David and artist Sam Kieth, he first appeared in "Marvel Comics Presents" #85 (September 1991), though his appearance was obscured by a trench coat and hat. He was first fully seen and named in "Marvel Comics Presents" #86 (September 1991).
Document 12: 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 13: Thomas Logan: Thomas Logan is a fictional character appearing in American comic books published by Marvel Comics. The character has been depicted as the biological father of X-Men member Wolverine. He was created by Bill Jemas, Joe Quesada, and Paul Jenkins. He was featured in the limited series "Origin", which detailed the youth and formative years of Wolverine and was published from November 2001 to July 2002.
Document 14: Logan (film): Logan is a 2017 American epic neo-western superhero drama film produced by Marvel Entertainment, TSG Entertainment, and The Donners' Company, and distributed by 20th Century Fox. It is the tenth installment in the "X-Men" film series, as well as the third Wolverine solo film following "" (2009) and "The Wolverine" (2013). The film, which takes inspiration from the "Old Man Logan" comic-book series by Mark Millar and Steve McNiven, follows an aged Wolverine defending his daughter Laura Kinney from the villainous Reavers led by Zander Rice and Donald Pierce.
Document 15: Cyborg (comics): Cyborg (Victor "Vic" Stone) is a fictional superhero appearing in American comic books published by DC Comics. The character was created by writer Marv Wolfman and artist George Pérez and first appears in a special insert in "DC Comics Presents" #26 (October 1980). Originally known as a member of the Teen Titans, Cyborg was established as a founding member of the Justice League in DC's 2011 reboot of its comic book titles and subsequently in the 2016 relaunch of its continuity.
ground_truth: Donald Pierce