Question: Who created the series in which Gary Cole voiced the title character? 

Context articles: Bob Russell (The West Wing)
The Brady Bunch Movie
Harvey Birdman, Attorney at Law
Tammy (film)
Matthew Gideon
In the Line of Fire
Milton (cartoon)
Gary Cole
Bill Lumbergh
DC Showcase: The Spectre

Robert "Bob" Russell is a fictional character played by Gary Cole on the television serial drama "The West Wing".
 He is introduced as a member of Congress from Colorado, and succeeds to the vice presidency after President Bartlet nominates him following the resignation of incumbent John Hoynes.
The Brady Bunch Movie is a 1995 American comedy film based on the 1969–1974 television series "The Brady Bunch".
 The film was directed by Betty Thomas, with a screenplay by Laurice Elehwany, Rick Copp, Bonnie and Terry Turner, and stars Shelley Long, Gary Cole and Michael McKean.
 The film places the original sitcom characters, with their 1970s fashion sense and 1970s sitcom family morality, in a contemporary 1990s setting, drawing humor from the resulting culture clash.
Harvey Birdman, Attorney at Law is an American adult animated television series created by Michael Ouweleen and Erik Richter for Adult Swim.
 The show revolves around the activity of the Sebben & Sebben law firm, which is staffed mainly by superheroes and other characters who had originally been featured in past Hanna-Barbera cartoons, most notably "Birdman and the Galaxy Trio".
Tammy is a 2014 American comedy film directed and co-written by Ben Falcone and produced, co-written by, and starring Melissa McCarthy as the title character.
 The film also stars Susan Sarandon, Allison Janney, Gary Cole, Mark Duplass, Dan Aykroyd, and Kathy Bates and was released on July 2, 2014.
Captain Matthew Gideon is a character in the fictional universe of the television series "Babylon 5", played by Gary Cole.
 Gideon was the lead character in the B5 spin-off show "Crusade", which ran for 13 episodes in 1999.
In the Line of Fire is a 1993 American action thriller film, directed by Wolfgang Petersen and starring Clint Eastwood, John Malkovich and Rene Russo.
 Written by Jeff Maguire, the film is about a disillusioned and obsessed former CIA agent who attempts to assassinate the President of the United States and the Secret Service agent who tracks him.
 Eastwood's character is the sole active-duty Secret Service agent remaining from the detail guarding John F. Kennedy in Dallas, Texas, at the time of his assassination in 1963.
 The film also stars Dylan McDermott, Gary Cole, John Mahoney, and Fred Thompson.
Milton was a series of animated shorts created by Mike Judge in 1991.
 They aired on "Saturday Night Live" in the mid 1990s, and like Mike Judge's other early shorts, appeared on MTV's Liquid Television in the early 1990s.
 The 1999 film "Office Space" was based upon the cartoons, and featured actor Stephen Root in the role of Milton Waddams.
 In the cartoon shorts all voices are by Mike Judge.
 Although Milton was the title character from the shorts, the role was a supporting character in the "Office Space" movie, as was his boss, Bill Lumbergh (played by actor Gary Cole in "Office Space").
 Milton traveled to different locations despite being consistently late for his taxis to take him there.
Gary Michael Cole (born September 20, 1956) is an American actor.
 Cole began his professional acting career on stage at Chicago's Steppenwolf Theatre Company in 1985.
 On television, he had starring roles in the series "Midnight Caller", "American Gothic", "Crusade", and "Veep".
 In film, Cole appeared in "The Brady Bunch Movie", "One Hour Photo", "Office Space", "", and "".
 Cole is also known for voicing the title character of "Harvey Birdman, Attorney at Law".
William "Bill" Lumbergh is a fictional character, who appeared initially in the Milton animated shorts, and later was portrayed by Gary Cole in the 1999 film "Office Space".
 A caricature of corporate management, Lumbergh is a division Vice President of the software company "Initech", and serves as the main antagonist of the film.
DC Showcase: The Spectre is a 2010 short animated film, directed by Joaquim Dos Santos and written by Steve Niles, Gary Cole played Detective Jim Corrigan, whose suspects are brought to justice by his alter-ego the Spectre.
 The film, which was released on February 23, 2010 as a bonus feature on the "" DVD, was the first of the DC Showcase series and was included on the compilation DVD "DC Showcase Original Shorts Collection" in an extended version.