Sean Masterson (born 20th century) is an American comedy actor, writer, director and producer.
He is known for his work with Drew Carey, writing on The Drew Carey Show, and as an improvisational performer on Whose Line Is It Anyway?, Drew Carey's Green Screen Show, and Drew Carey's Improv-A-Ganza.
Masterson was raised in Los Angeles and began his career at the age of six when he appeared in a Count Chocula / Franken Berry television commercial, directed by Bill Melendez.
After graduating high school in Los Angeles and acting in commercials, daytime serials, and school plays, Masterson briefly attended college. He later moved to Chicago to begin pursuing an acting career.
After bartending and working odd jobs for nine months, he was hired by The Second City, the improvisational-comedy troupe, where he worked on stage with Mike Myers, Steve Carell and Bonnie Hunt. Masterson started working with Ryan Stiles and Carey upon returning to Los Angeles, performing live improvisational comedy as a part of "The Improv All Stars".
Masterson created and co-wrote the web show Home Purchasing Club for VH1/Spike, which ran for two seasons and featured Kristen Wiig, Jeff Garlin, Diedrich Bader, and David Koechner. Home Purchasing Club was directed by Brian K. Roberts and executive produced by Jordan Levin, Pete Aronson and Generate.
Masterson created, wrote and directed Republicrats for the MSN (Microsoft) website, portraying a former Fresno, California, television weatherman who decides to run for President of the United States against John McCain and Barack Obama. Republicrats was reviewed by The Wall Street Journal, The Hollywood Reporter and TV Week as a Top Web Show of 2008. Republicrats was produced by Ivana Ma and Generate.
In 2008, Masterson was named a top-ten web video producers to watch by TV Week.
Masterson and Ryan Stiles wrote a half-hour comedy pilot called Memory Lanes, directed by Brian K. Roberts and produced by Masterson, Stiles, and Richard Elwood.
Masterson is known for his appearances in the improvisational shows Drew Carey's Green Screen Show, and Drew Carey's Improv-A-Ganza. He has appeared in numerous television series apart from the two Whose Line Is It Anyway? spin-offs.
Masterson has a wife and two children and he lives in Los Angeles, California.