Question: Which character in the Harry Potter series was dubbed by the same Canadian actor who dubbed the leader of the Autobots?

Context paragraphs:
Hubert Gagnon: Hubert Gagnon is an actor in the Canadian province of Quebec.  He is best known as the voice of Homer Simpson in the Quebec version of "The Simpsons", the voice of Mel Gibson in many movies, and also the character Picabo on the québécois TV show Les Oraliens.  He also dubbed the character Vernon Dursley in the famous Harry Potter films.  He was also the voice of Optimus Prime in the Quebec dubbing of the original "Transformers" cartoon, but for the 2007 film, he was replaced by Guy Nadon, who had coincidentally portrayed Sideshow Bob alongside Gagnon in the québécois dubbed version of The Simpsons.

Lego Harry Potter: Years 1–4: Lego Harry Potter: Years 1–4 is a Lego-themed action-adventure video game developed by Traveller's Tales and published by Warner Bros.  The game is based on the Lego Harry Potter line and its storyline covers the first four films in the "Harry Potter" series: "Harry Potter and the Sorcerer's Stone", "Harry Potter and the Chamber of Secrets", "Harry Potter and the Prisoner of Azkaban", and "Harry Potter and the Goblet of Fire".  The game is available on the Wii, Xbox 360, PlayStation 3, Nintendo DS, PlayStation Portable, Microsoft Windows, OS X, iOS and Android.  The OS X version of the game was released on 22 February 2011 by Feral Interactive.  The game was released for the PlayStation 4 on October 21, 2016, as part of the "Lego Harry Potter Collection", which bundles the game with its sequel, "".

Harry Potter and the Forbidden Journey: Harry Potter and the Forbidden Journey is a motion-based dark ride located in The Wizarding World of Harry Potter themed areas of Islands of Adventure in Orlando, Florida, Universal Studios Hollywood in Universal City, California, and Universal Studios Japan in Osaka, Japan.  The ride takes guests through scenes and environments in and around Hogwarts Castle from the Harry Potter series of books and films.  Mark Woodbury, president of Universal Creative, described the ride as an in-depth look at the world of Harry Potter, which utilizes never-before-seen technology which transforms "the theme park experience as you know it".  The ride first opened at Islands of Adventure with "The Wizarding World of Harry Potter" on June 18, 2010, at Universal Studios Japan on July 15, 2014, and at Universal Studios Hollywood on April 7, 2016.

MuggleNet: MuggleNet is a "Harry Potter" fansite founded by Emerson Spartz.  The site is composed of news, editorials, and synopses of the "Harry Potter" books and films, an encyclopedia of the books, an IRC network, in which the fans of "Harry Potter" can discuss predictions and share thoughts, a discussion forum, and media such as screenshots, theatrical trailers, and book covers.  There is also a fan fiction section, a weekly caption contest, and other occasional contests and polls.  On August 9, 2005, it launched a podcast, dubbed "MuggleCast", as well as its own line of clothing, toy wands, and other merchandise.  In 2006, MuggleNet released a best-selling reference book on "Harry Potter and the Deathly Hallows", the final book in the series.  As of 2008, MuggleNet is owned by Spartz, Inc., an Indiana corporation registered by Emerson Spartz in 2007.  On May 29, 2010, MuggleNet 2.0, an updated version of the site, went live.  On April 1, 2014, MuggleNet 3.0 was launched to the public.

Danielle Elizabeth Tumminio: Danielle Elizabeth Tumminio is an Episcopal priest, theologian, a certified life coach and spinning instructor, and the author of "God and Harry Potter at Yale: Teaching Faith and Fantasy Fiction in an Ivy League Classroom".  She was the instructor of the "Christian Theology and Harry Potter" seminar at Yale University in the spring of 2008; in 2011, she repeated the course at Tufts University.  Tumminio has also presented material on the intersection between theology and the Harry Potter series at the Infinitus Symposium in Orlando, Florida in 2010, the Portus Symposium in Dallas, Texas, in the summer of 2008, and she chaired the panel on Harry Potter and Religion at the 2008 American Academy of Religion conference.  Her teaching has been praised by Harry Potter commentator John Granger on his Hogwarts Professor website.

James Potter (series): The James Potter series is an unofficial sequel-series of J.K. Rowling's Harry Potter universe, written by G. Norman Lippert.  The novel series centers around the character of James Sirius Potter, Harry Potter's son, a character who makes a fleeting appearance in the novel "Harry Potter and the Deathly Hallows".  The series starts with his first year at Hogwarts, set one year before the end of the Harry Potter series.

Optimus Prime: Optimus Prime is a fictional character from the "Transformers" franchise.  He is the leader of the Autobots.  A fictional group of sentient robots that can transform into other forms (e.g: cars and other objects) He is the most iconic of the Transformers, being frequently featured in Popular Culture.

Lego Harry Potter: Lego "Harry Potter" is a Lego theme based on the films of the "Harry Potter" series.  Lego models of important scenes, vehicles and characters were made for the first six films and all the books released.  The first sets appeared in 2001, to coincide with the release of the first film "Harry Potter and the Philosopher's Stone" (Harry Potter and the Sorcerer's Stone in the United States).  Subsequent sets were released alongside the new films, until Harry Potter and the Order of the Phoenix.  The line then went dormant for three years.  It is unknown if the theme will again be revived to coincide with future installations in the Harry Potter franchise, such as the film Fantastic Beasts and Where to Find Them.

Harry Potter and the Deathly Hallows: Harry Potter and the Deathly Hallows is the seventh and final novel of the "Harry Potter" series, written by British author J. K. Rowling.  The book was released on 21 July 2007, ten years after publication of "Harry Potter and the Philosopher's Stone" (1997), by Bloomsbury Publishing in the United Kingdom, in the United States by Scholastic, and in Canada by Raincoast Books, ending the series that began in 1997 with the publication of "Harry Potter and the Philosopher's Stone".  The novel chronicles the events directly following "Harry Potter and the Half-Blood Prince" (2005), and the final confrontation between the wizards Harry Potter and Lord Voldemort, as well as revealing the previously concealed back story of several main characters.  The title of the book refers to three mythical objects featured in the story, collectively known as the "Deathly Hallows"—an unbeatable wand, a stone to bring the dead to life, and a cloak of invisibility.

Lego Harry Potter: Years 5–7: Lego Harry Potter: Years 5–7 is a Lego-themed action-adventure video game developed by Traveller's Tales and published by Warner Bros.  Interactive Entertainment.  Released on 11 November 2011 in North America and 18 November in Europe, the game is based on the Lego Harry Potter line and is based on the final three books and four films in the "Harry Potter" series: "Harry Potter and the Order of the Phoenix", "Harry Potter and the Half-Blood Prince", "Harry Potter and the Deathly Hallows – Part 1", and "Harry Potter and the Deathly Hallows – Part 2".  The game was released for the PlayStation 3, Xbox 360, PlayStation Portable, PlayStation Vita, Wii, Nintendo DS, Nintendo 3DS, Microsoft Windows, iOS and Android.  The first trailer of three trailers was released 6 October 2011, and the demo was released on 1 November.  The game was released on Steam on 5 January 2012.  The OS X version of the game was released by Feral Interactive on 7 March 2012.  The game was released for the PlayStation 4 on October 21, 2016, as part of the "Lego Harry Potter Collection", which bundles the game with its predecessor, "".

Supporting paragraphs: Hubert Gagnon Optimus Prime
Answer: Vernon Dursley