Question: Of what group is the character voiced by Marc Diraison the leader ?  

Context paragraphs:
Maz Kanata: Maz Kanata is a fictional character in the "Star Wars" franchise.  Introduced in the 2015 film "", she is a CGI character voiced and performed through motion capture by Lupita Nyong'o.  Maz, a former pirate and smuggler, is over 1000 years old and manages an interstellar tavern in a castle on the fictional planet Takodana.

Mayor West: Mayor Adam West is a character voiced by actor Adam West on the American animated television series "Family Guy".  He is the mayor of the town of Quahog, Rhode Island, where the show is set.  He has appeared on a recurring basis since his first appearance in Season 2.

2010 Canada anti-prorogation protests: On 23 January 2010 there were numerous protests opposing the prorogation of the 40th Canadian Parliament.  The prorogation had occurred a month earlier on 30 December 2009 on the constitutional advice of Prime Minister of Canada Stephen Harper and was officially carried out by Governor General Michaëlle Jean.  Protests were held in over 60 cities and towns in Canada, and internationally in New York City, San Francisco, Dallas, London, Oman, Brussels, Amsterdam, The Hague and Costa Rica.  The protests and rallies attracted approximately 21,000 participants, including many who had joined a group on Facebook, known as the "Canadians Against Proroguing Parliament" (CAPP).  At the 23 January rallies in Ottawa and Toronto, Liberal Party leader Michael Ignatieff, New Democratic Party (NDP) leader Jack Layton, Green Party leader Elizabeth May, and Member of Parliament Bob Rae spoke against the prorogation, while at the rally in Montreal, Bloc Québécois leader Gilles Duceppe spoke alongside future NDP leader, Thomas Mulcair, and Liberal MP Marc Garneau.  Future Liberal Leader, Justin Trudeau, was also in attendance at the Montreal Rally.

Marc Diraison: Marc Diraison (born February 7, 1975) is an American voice actor, ADR director, and script writer who has worked for Bang Zoom!  Entertainment, NYAV Post, 4Kids Entertainment and DuArt Film and Video.  He is best known as the voice of Guts in "Berserk".

Supreme Leader Snoke: Supreme Leader Snoke is a fictional character in the "Star Wars" franchise.  Introduced in the 2015 film "", he is a CGI character voiced and performed by Andy Serkis.  Snoke is the leader of the First Order, a military junta resurrected from the fallen Galactic Empire, which seeks to reclaim control of the galaxy.  Powerful with the Force, he has seduced Kylo Ren to the dark side.

Squidward Tentacles: Squidward Quincy Tentacles is a fictional character voiced by actor Rodger Bumpass in the American animated comedy television series "SpongeBob SquarePants".  Squidward was created and designed by marine biologist and animator Stephen Hillenburg.  He first appeared on television in the series' pilot episode "Help Wanted" on May 1, 1999.

List of Teen Titans episodes: "Teen Titans" is an American animated television series based on the DC comics series of the same name by Bob Haney and Bruno Premiani.  Developed by David Slack for Cartoon Network, the series was produced by DC Entertainment and Warner Bros.  Animation with Sander Schwartz serving as executive producer and Glen Murakami, Bruce Timm, and Linda M. Steiner signing on as producers.  The series follows the adventures of a team of crime-fighting teenaged superheroes, consisting of the leader Robin (voiced by Scott Menville), foreign alien princess Starfire (voiced by Hynden Walch), the technological genius Cyborg (voiced by Khary Payton), the dark sorceress Raven (voiced by Tara Strong), and the green shapeshifter Beast Boy (voiced by Greg Cipes).

K-2SO: K-2SO or Kay-Tuesso is a droid character in the "Star Wars" franchise, first appearing in the 2016 film "Rogue One".  He is a CGI character voiced and performed through motion capture by Alan Tudyk.  In the film, K-2SO is a KX-series security droid originally created for use in the Empire.

Mary Shelley (Doctor Who): Mary Shelley, the English writer best known for her Gothic novel "Frankenstein: or, The Modern Prometheus", has been featured in the fictional universe of the long-running British science fiction television series "Doctor Who" on a number of occasions, most prominently as a character voiced by Julie Cox in a series of audio plays produced by Big Finish Productions based on the series.  In the various audio plays, she is a companion of the Eighth Doctor.

Berserk (manga): Berserk (Japanese: ベルセルク , Hepburn: Beruseruku ) is a Japanese dark fantasy manga series written and illustrated by Kentaro Miura.  Set in a medieval Europe-inspired dark fantasy world, the story centers on the characters of Guts, a lone mercenary, and Griffith, the leader of a mercenary band called the "Band of the Hawk".  Themes of isolation, camaraderie, and the question of whether humanity is fundamentally good or evil pervade the story, as it explores both the best and worst of human nature.  Both the manga and anime are noted for their use of graphic violence and sexual content.

Supporting paragraphs: Marc Diraison Berserk (manga)
Answer: the "Band of the Hawk".