Question: The chef who has been nicknamed The Demon Chef is judging what Canadian competitive cooking show?

Context paragraphs:
MasterChef: The Professionals: MasterChef: The Professionals is a BBC television competitive cooking show aired on BBC Two.  It is a spin-off from the main "MasterChef" series, for professional working chefs.  Introduced in 2008, Gregg Wallace and India Fisher reprised their roles as co-judge and voiceover respectively.  "MasterChef" judge John Torode was replaced by Michel Roux Jr., a two-Michelin-star chef, assisted, from 2009, by his sous-chef Monica Galetti.  Since 2011, Sean Pertwee has taken over Fisher's role as voiceover.

Beat the Chef: Beat The Chef is a television show shown on ABC-TV in Australia.  It is a part game show part cooking show where two contestants cook a meal out of strange ingredients within 25 minute time limit.  This show was influenced by the world-popular Japanese cooking show Iron Chef.

Mister Ajikko: Mister Ajikko (Japanese: ミスター味っ子 , Hepburn: Misutā Ajikko ) is a Japanese manga series written and illustrated by Daisuke Terasawa about a young boy cook.  It was later adapted into anime series, produced by TV Tokyo and Sunrise.  This show was broadcast from October 8, 1987 to September 28, 1989 with a total of 99 episodes and one TV Special.  One of the earliest cooking/battle related manga and anime of its kind, there are some indications that this series is the inspiration for the live action competitive cooking show, Iron Chef.

Cooking with Dog: Cooking with Dog is a Japanese cooking show web series.  It premiered on YouTube on September 9, 2007.  The show features a Japanese woman known only as "Chef" who prepares the featured dish of the episode while her toy poodle Francis (via voiceover) narrates the process.  While Chef speaks in Japanese, Francis narrates the episodes in English, a decision designed to expand the show's audience.  Though initially focusing on Japanese cuisine, the show later expanded to include cuisine from other regions.  New episodes were uploaded each Friday, before switching to a different release structure in early 2017.  Despite the show's popularity and public appearances by Chef, the identities of both Chef and the show's producer are intentionally undisclosed out of privacy concerns.

Jun Tanaka (chef): Jun Tanaka (born 18 November 1971) is an American-born Japanese-British UK TV chef, best known for presenting Channel 4's "Cooking It" as well as appearing in "Saturday Kitchen" on BBC One.  He was the third Grand Champion of the American competitive cooking show, "Chopped".

Alvin Leung: Alvin King Lon Leung (; born 1961), is a Hong Kong chef who holds three Michelin stars at his restaurant Bo Innovation in Hong Kong and one Michelin star in his restaurant Bo London in London.  He is nicknamed The Demon Chef, and has invented his own cuisine which he calls X-Treme Chinese, which includes meals such as an edible condom on a mushroom beach.  He spent £1.7 million on his second restaurant, Bo London, based in Mayfair, London.  A third restaurant, Bo Shanghai has been opened in Shanghai, China.

Kitchen Super Star (season 4): Kitchen Super Star (season 4) is a Tamil competitive cooking show which aired on Vijay TV from 14 February 2015 through 11 July 2015.  Suresh, Chef Dhamu and Chef Venkatesh Bhat were the judges.

Iron Chef Vietnam: Iron Chef Vietnam (Vietnamese: "Siêu Đầu Bếp Việt Nam") is a Vietnamese cooking show based on the Japanese show "Iron Chef", as well as its American adaptation "Iron Chef America" and "The Next Iron Chef".  The program is a sort of culinary game show, with each episode seeing a challenger chef competing against one of the resident "Iron Chefs" in a one-hour cooking competition using a theme ingredient.

Iron Chef America: Iron Chef America is an American cooking show based on Fuji Television's "Iron Chef", and is the second American adaptation of the series, following the failed "Iron Chef USA".  The show is produced by Food Network, which also carried a dubbed version of the original "Iron Chef".  Like the original Japanese program, the program is a culinary game show.  In each episode, a new challenger chef competes against one of the resident "Iron Chefs" in a one-hour cooking competition based on a secret ingredient or ingredients, and sometimes theme.

MasterChef Canada: MasterChef Canada is a Canadian competitive cooking show, part of the "MasterChef" franchise.  It premiered on CTV on January 20, 2014.  Three judges have been announced for the show: Claudio Aprile, Michael Bonacini and Alvin Leung.  The show is produced by Endemol Shine International and Proper Television.

Supporting paragraphs: MasterChef Canada Alvin Leung
Answer: MasterChef Canada