Question: Who penciled the comic on which the 2011 comic movie starring Justin Chambers is based?

Context articles: Flashpoint (comics)
Rictor
Spider-Island
Superman: Grounded
Bloodthirsty: One Nation Under Water
Karan Kundra
Justice League: The Flashpoint Paradox
Infamous (comics)
The Conrad Boys
The Musketeer

"Flashpoint" is a 2011 comic book crossover story arc published by DC Comics.
 Consisting of an eponymous core limited series and a number of tie-in titles, the storyline premiered in May 2011.
 The core miniseries was written by Geoff Johns and pencilled by Andy Kubert.
 In its end, the series radically changes the status quo for the DC Universe leading into the publisher's 2011 relaunch, the New 52.
Rictor (Julio Esteban "Ric" Richter) is a fictional comic book superhero in the Marvel Universe, who appears in the "X-Men" family of books published by Marvel Comics.
 He was created by writer Louise Simonson and artist Walt Simonson and first appeared in "X-Factor" #17 (June 1987).
 In subsequent years, the character was featured as a member of the original New Mutants team and the original X-Force team, and continued to appear in various "X-Men" franchise publications thereafter.
 In comic books published in the 1980s and 1990s, Rictor's mutant powers were to generate seismic energy and tremendously powerful vibrations in any nearby object, inducing earthquake-like phenomena and causing objects to shatter or crumble.
 When the character was reintroduced in 2005, it was as one of many depowered mutants adjusting to civilian life.
 The character remained depowered until a 2011 comic.
"Spider-Island" is a 2011 comic book storyline starting in "The Amazing Spider-Man" and crossing over into other comic books published by Marvel Comics, most of which were limited series or one-shots specifically for this storyline.
 The main plot involves the inhabitants of Manhattan Island mysteriously gaining powers similar to Spider-Man.
 It featured the return of the Jackal and the Queen to the Marvel Universe as well as laying the ground work for the second volume of the "Scarlet Spider" series.
"Grounded" is a 2010-2011 comic book story arc that ran through the "Superman" monthly ongoing series.
 It was written by J. Michael Straczynski and Chris Roberson, and penciled by Eddy Barrows, with covers by John Cassaday.
"Bloodthirsty: One Nation Under Water" is a five-issue creator-owned comic book limited series written by American writer Mark Landry (of "Teen Beach Movie") and published by British comics publisher Titan.
 The interior art was penciled by Ashley Witter and Richard Pace, and includes a three-page epilogue drawn by Georges Jeanty.
 Interior colorists were Ashley Witter, and the team of Sian Mandrake and Justin Prokowich.
 The publisher offered variant covers for each issue, including one cover each by Ashley Witter, one by Nick Runge, one by Georges Jeanty, and two by Joel Carpenter.
 Series editors included Tom Williams (Titan), John Hazners and Chris Fortier.
Karan Kundrra (earlier known as Karan Kundra) is an Indian film and television actor best known for playing the role of "Arjun Punj" in Ekta Kapoor's Indian soap opera "Kitani Mohabbat Hai" that aired on NDTV Imagine.
 He is also remembered for hosting three seasons of Ekta Kapoor's yet another crime show "Gumrah End of Innocence" on Channel V.
 He was also a 'Gang Leader' in MTV Roadies X2 and X4.
 He was replaced by Nikhil Chinnapa in Roadies Rising as he had to quit it due to movie commitments.
 He played a meaty role of NRI businessman Manpreet Sandhu in director Anees Bazmee's comic movie Mubarakan.
Justice League: The Flashpoint Paradox is a direct-to-video animated film adaptation of the 2011 comic book crossover "Flashpoint" by Geoff Johns and Andy Kubert.
 It is scripted by Jim Krieg and directed by Jay Oliva.
 The film stars Justin Chambers as Barry Allen / Flash, C. Thomas Howell as Eobard Thawne / Professor Zoom, Michael B. Jordan as Victor Stone / Cyborg, and Kevin McKidd as Thomas Wayne / Batman.
 The film also sees actors reprising roles from other DC Animated properties; actors including Kevin Conroy as Bruce Wayne / Batman, Nathan Fillion as Hal Jordan / Green Lantern, Ron Perlman as Deathstroke, Dana Delany as Lois Lane, Vanessa Marshall as Princess Diana / Wonder Woman and Dee Bradley Baker as Etrigan.
 It is the 17th film in the DC Universe Animated Original Movies series.
 It was released on July 30, 2013, then re-released on September 10, 2013, as a 2-disc special edition.
Infamous is a 2011 comic book series based on the video game of the same name published by DC Comics in association with Sucker Punch Productions (the developer of the game).
 The comic book will follow the adventure of superhero, Cole MacGrath, and takes place in between the events of "Infamous" and "Infamous 2".
 The comic primarily depicts Cole's escape from Empire City in the first game to New Marais in the second game.
 The comic features illustrations by Eric Nguyen as well as a cover art by Doug Mahnke with the story written by William Harms.
 The first issue of the six-part comic series was released in March 2011.
The Conrad Boys is a 2006 American drama film starring Justin Lo, Nick Bartzen, Boo Boo Stewart and Barry Shay.
 The film was written and directed by Justin Lo.This film was produced by Justin Lo and Jose Ramizer.
The Musketeer is a 2001 American film based on Alexandre Dumas's classic novel "The Three Musketeers", directed by Peter Hyams and starring Catherine Deneuve, Mena Suvari, Stephen Rea, Tim Roth and Justin Chambers.