Question: George Lowe was the voice of the main character on the show that was a spin-off of what variety show?

Context paragraphs:
Keep Running (TV series): Keep Running (), previously known as Running Man () before 2017, is a Chinese variety show broadcast on ZRTG: Zhejiang Television.  It is a spin-off from the popular original South Korean variety show "Running Man" by SBS.  It was first aired on 10 October 2014.  The show is classified as a game-variety show, where the MCs and guests complete missions at a landmark to win a race.

George Lowe: George Edward Lowe (born November 10, 1958) is an American voice actor and comedian.  He is perhaps best known for his role as the voice of Space Ghost on the Cartoon Network/Adult Swim/GameTap animated series "Space Ghost Coast to Coast"; he also played the part for its spin-off "Cartoon Planet".  He continued to voice Space Ghost in several cameos in other programs for several years, even following the conclusion of the series.  He has also made recurring voice appearances on "Aqua Teen Hunger Force" and "Robot Chicken".

George Lowe (mountaineer): Wallace George Lowe, CNZM, OBE (15 January 1924 – 20 March 2013), known as George Lowe, was a New Zealand-born mountaineer, explorer, film director and educator.  He was the last surviving member of the 1953 British Mount Everest Expedition, during which his friend Edmund Hillary and Sherpa Tenzing Norgay became the first known people to summit the world's highest peak.

George Lowe Sutton: George Lowe Sutton (23 October 1872 – 11 January 1964) was an Australian agricultural scientist and breeder of wheat.

The Grinch (video game): The Grinch is a platform video game based on the film of the same name.  The game was released shortly after the film hit theaters.  George Lowe does uncredited work as the Narrator of the game.

George Lowe (rugby union): George Lowe (born 22 October 1989 in England), is an English former rugby union player for Harlequins.  He played as a Centre or on the Wing.

George Lowe (MP): George Lowe (c. 1594 – 19 November 1682) was an English politician who sat in the House of Commons at various times between 1640 and 1679.  He was an equivocal supporter of the Royalist cause in the English Civil War.

Cartoon Planet: Cartoon Planet was an American animated variety show that originally ran from 1995 to 1998, and from March 30, 2012 to February 8, 2014 (in a different format) on Cartoon Network.  A spin-off of the animated "Space Ghost Coast to Coast" talk show, the original premise was that Space Ghost had recruited his imprisoned evil nemesis Zorak and his loud and dimwitted archenemy Brak to assist him in hosting a variety show.

George Lowe (disambiguation): George Lowe (born 1958) is an American comedian and voice actor.

The Conquest of Everest: The Conquest of Everest is a 1953 British documentary film directed by George Lowe about various expeditions to the summit of Mount Everest.  It was nominated for an Academy Award for Best Documentary Feature.

Supporting paragraphs: George Lowe Cartoon Planet
Answer: Space Ghost Coast to Coast