Question: What actor from the TV series "Reaper" also played a character named Sam Sullivan?
Context: Damon Dark is an independent public access TV series and web series from Australia about a heroic and obsessive investigator of UFO incidents and other strange cases, created by Australian writer, actor and film maker Adrian Sherlock.  Damon James Dark became a dedicated alien investigator after a close encounter during his teenage years.  He is associated with both the secret service and friendly aliens, including a character called Vincent Kosmos (an alien time traveller) and Trans-Dimensional Control (an alien law enforcement agency).  The character of Damon Dark has appeared in a 5-week TV series on Community TV 31 in Melbourne Australia, a self-published novel ("Biodome") on Amazon's createspace platform and a long running web series on YouTube.  He has also been involved in related web series "Young Damon Dark" and "Vincent Kosmos."  He has also been the focus of a one actor stage drama.  The character of Damon Dark has been played by Adrian Sherlock, Bruce Hughes, Aiden Sherlock and Jack Knoll.  Damon Dark is a loner, dresses in black, has a huge experience of aliens and their technology.  Damon is characterized by his high intelligence, idealistic moral outlook and wry sense of humor.  His best friend in the series is the long-suffering Gary Sutton, played by actor Robert Trott.  Damon Dark began in 1999, with a five-part weekly series on Melbourne's Community TV 31, (although the pilot was shot in 1996 and the show had been in development since 1990) following a screening of a 65-minute version of the story "Maddox" at the 57th World Science Fiction Convention (Aussiecon Three) held in Melbourne.  The series was later revived as a YouTube webseries which inspired several related webseries, including "The Young Damon Dark Adventures" in which the character is played as a teenager, and Vincent Kosmos, (created by and starring Chris Heaven, , an Italian actor and musician, about a renegade alien character who is a friend of Damon. William Szathmary (October 5, 1924 June 15, 2017), known professionally by his stage name Bill Dana, was an American comedian, actor, and screenwriter.  He often appeared on television shows such as "The Ed Sullivan Show", frequently in the guise of a heavily accented Bolivian character named José Jiménez.  Dana often portrayed the Jiménez character as an astronaut. Burt Gummer is a fictional character, played by actor Michael Gross, from the "Tremors" film series and the short lived SciFi Channel TV program of the same name.  Appearing in "Tremors", "", "", "", and most episodes of the TV series, Burt Gummer is a firearms enthusiast and a paranoid survivalist.  He and his former wife, Heather Gummer (played by Reba McEntire), were the first persons in the film series to directly kill a Graboid.  He has an "overkill" approach to trouble and takes himself deadly seriously.  Although he is only the central character in "Tremors 3" and the TV series, his eccentric personality has made him a favorite among Tremors fans and the de facto star of the franchise, along with the vicious Graboids who oppose him.  His ancestor, Hiram Gummer (also played by Gross), appears in "".  He finds out he has a son Travis B. Welker in Tremors 5 who is the son of the girlfriend he had before he married Heather. William Thomas Sadler (born April 13, 1950) is an American film and television actor.  His television and motion picture roles have included Lewis Burwell "Chesty" Puller in "The Pacific", in "", Sheriff Jim Valenti in "Roswell", convict Heywood in "The Shawshank Redemption", Senator Vernon Trent in "Hard To Kill", and the Grim Reaper in "Bill & Ted's Bogus Journey", a role for which he won the Saturn Award for Best Supporting Actor, and his role as Colonel Stuart opposite Bruce Willis in "Die Hard 2".  He played the character of President of the United States, Matthew Ellis, in "Iron Man 3", in "Marvel's Agents of S.H.I.E.L.D.", and in "WHIH Newsfront", and recurs as Steve McGarrett's murdered father in the latter-day 2000's remake of "Hawaii Five-O".  In 2015, Sadler had an appearance in the TV series "Z Nation". Sullivan was selected to represent Wales at the 1995 Rugby League World Cup.  He played for St Helens on the wing in their 1996 Challenge Cup Final victory over Bradford.  At the end of Super League's first season, he was named on the wing in the 1996 Super League Dream Team.  Together with Alan Hunte he was the 1997 St. Helens' top try scorer.  In the 1997 post season, Sullivan was selected to play for Great Britain on the wing in the first match of the Super League Test series against Australia.  His usual position was on the wing and he was named in this position in 1998's Super League III Super League Dream Team.  Sullivan played for St. Helens on the wing in their 1999 Super League Grand Final victory over Bradford.  He also played for St Helens on the wing in their 2000 Super League Grand Final victory over Wigan.  He played for Wales in the 2000 Rugby League World Cup.  As Super League V champions, St. Helens played against 2000 NRL Premiers, Brisbane Broncos in the 2001 World Club Challenge.  Sullivan played on the wing in Saints' victory.  He became a dual-code international when he represented the Wales national rugby union team in 2001. Samer Ismail (Arabic: ‎ ‎ ; born 8 July 1985 in Riyadh, Saudi Arabia) is a Syrian actor known for portraying the character of Umar bin Al-Khattab, the second caliph of Islam in the well-known pan-Arab television series "Omar" (TV series) directed by Hatem Ali.  The series was produced and broadcast by MBC.  Some questioned his portrayal of the character of Omar, demanding to know Ismail's religious origin.  Ismail refused to reveal his religious denomination saying that this was a personal matter and was totally irrelevant to his role.  He also played the role of Azzam in the TV series "Minbar al Mawta" directed by Rasha Sharbatji. Bret Michael Harrison (born April 6, 1982) is an American actor and musician known predominantly for his work on comedy television series such as "Grounded for Life", "The Loop", "Reaper", and "Breaking In". Pankaj Dheer is an Indian television and film actor.  His best known role was as Karna in epic TV series, Mahabharata (1988–1990), which became a famous Indian television series, and as Shivadatta in "Chandrakanta" (TV series) (1994–1996).  He also played the role of Sadashivrao Bhau, the commander in chief of the Maratha army at the third battle of Panipat in the TV series The Great Maratha produced by Sanjay Khan. The Loop was an American sitcom that ran from March 15, 2006 to July 1, 2007 on Fox.  The show starred Bret Harrison as Sam Sullivan, a young professional trying to balance the needs of his social life with the pressures of working at the corporate headquarters of TransAlliance Airways, a major U.S. airline.  Set in the city of Chicago, whose downtown loop area acted as the setting for most of the show.  The show's theme song is "Hockey Monkey" by James Kochalka Superstar and the Zambonis. Joseph Aloysius Sullivan (February 17, 1917 – August 2, 2002) was a Major Case Inspector for the Federal Bureau of Investigation.  Born in Montreal, Wisconsin, he grew up in Hurley, Wisconsin.  He was involved in a number of highly publicized cases in the sixties and seventies including the assassination of Martin Luther King Jr., the murder of United Mine Workers reformer Joseph "Jock" Yablonski, the Sterling Hall bombing at the University of Wisconsin–Madison, and the Kent State shootings.  Despite his involvement in such high-profile cases, Sullivan is best known for his relentless search to track down the killers of three civil rights workers, who were brutally slain in Mississippi in 1964.  The character played by Willem Dafoe in the movie "Mississippi Burning" is loosely based on Sullivan.  According to "The FBI - A Comprehensive Referecie Guide" (1998), edited by Athan G. Theoharis, Sullivan was also the model for Inspector Lew Erskine, the lead character played by Efrem Zimbalist, Jr., on the TV series "The FBI".
Answer: Bret Harrison