WrestleMania is a professional wrestling pay-per-view (PPV) event, produced annually in late March or early April by WWE, a professional wrestling promotion based in Connecticut. WWE first produced the event in 1985 to be its premiere annual event and has since produced twenty-eight editions with the twenty-ninth scheduled to take place in East Rutherford, New Jersey in 2013. WWE regards it as a flagship event due to it being the most successful and longest-running professional wrestling event in history. WrestleMania was conceptualized by WWE owner Vince McMahon.

WrestleMania's widespread success helped transform the professional wrestling industry and make WWE the most successful wrestling promotion in the world.^{[citation needed]} The event has facilitated the rise to stardom of wrestlers including Hulk Hogan, Rowdy Roddy Piper, Macho Man Randy Savage, The Ultimate Warrior, The Undertaker, Bret Hart, Shawn Michaels, Steve Austin, The Rock, Triple H, Chris Jericho, Kurt Angle, John Cena, and CM Punk. Celebrities such as Aretha Franklin, Cyndi Lauper, Muhammad Ali, Mr. T, Alice Cooper, Lawrence Taylor, Pamela Anderson, Mike Tyson, Donald Trump, Floyd Mayweather, Snoop Dogg and others have participated or made special appearances within the events.

Sam Roberts (born October 2, 1974) is a Juno Award-winning Canadian rock singer-songwriter, whose 2001 debut release, The Inhuman Condition, became one of the bestselling independent releases in Quebec and Canadian music history.

Born in Westmount three weeks after his parents immigrated to Montreal from South Africa, Sam Roberts grew up on Cedar Avenue in Pointe-Claire, where his family moved when he was five years old. He attended St. Edmund Elementary School in Beaconsfield, Loyola High School in N.D.G. and John Abbott College in Ste. Anne de Bellevue before graduating from McGill University in Montreal. Roberts formed the band that eventually became known as William in 1993. The band's name was changed to Northstar in 1996. Although the band gained some notice in independent rock circles, they never broke through to a national audience and broke up in 1999 after failing to release an album. Roberts' bandmate George Donoso went on to significant success in indie rock circles with The Dears but Roberts struggled for several years afterward.

Paul Michael Levesque (born July 27, 1969) is an American professional wrestler, wrestling executive, and actor better known by his ring name Triple H, an abbreviation of the ring name, Hunter Hearst Helmsley. Currently, Levesque works in the front office of WWE as the Executive Vice President of Talent and Live Events, and as Triple H appears on television as the (storyline) Chief Operating Officer, and part-time wrestler.

Levesque began his wrestling career in the International Wrestling Federation as Terra Ryzing before joining World Championship Wrestling (WCW) in 1994. After briefly using the Ryzing name, he changed his character to Jean-Paul Lévesque, a French-Canadian aristocrat which would be similar to his character Hunter Hearst Helmsley, that he used in his early years with the World Wrestling Federation (WWF) from 1995 onward. He later abbreviated his name to Triple H and adopted an alternative image in the D-Generation X (DX) stable. After the dissolution of DX, Triple H was pushed as a main event wrestler, winning several singles championships. As part of a storyline Triple H married Stephanie McMahon, who later became his real-life spouse. In 2003, Triple H formed another stable known as Evolution, and reformed DX with Shawn Michaels in 2006 and 2009. He is heavily involved in the writing process of WWE programming, and holds complete creative control over his television character's storylines, win/loss record, and championship reigns.

Randal Keith "Randy" Orton (born April 1, 1980) is an American professional wrestler and actor. He is signed to WWE wrestling on its SmackDown brand. Orton is a third-generation professional wrestler; his grandfather Bob Orton, Sr., father "Cowboy" Bob Orton, and uncle Barry O all competed in the professional wrestling industry.

Before being promoted to the main World Wrestling Federation (WWF, now WWE) roster, Orton trained in and wrestled for Mid-Missouri Wrestling Association-Southern Illinois Conference Wrestling for a month. He was then sent to Ohio Valley Wrestling (OVW), where Orton held the OVW Hardcore Championship on two separate occasions.

After signing with WWF, Orton became a member of the stable Evolution, which quickly led to a WWE Intercontinental Championship reign, his first title with the company. Orton also acquired the moniker "The Legend Killer" during a storyline where he began disrespecting Hall of Famers and physically attacking veterans of the industry outside of appropriate restrictions. At age 24, Orton became the youngest person ever to hold the World Heavyweight Championship. With this win, Orton departed from Evolution and a feud with his former stablemates began. In 2006, Orton joined forces with Edge in a tag team known as Rated-RKO. Together, Orton and Edge held the World Tag Team Championship. After the team disbanded, during mid-2007, Orton gained two WWE Championship reigns in one night. Orton formed the group The Legacy with Cody Rhodes and Ted DiBiase in 2008, however, they would disband in 2010 with Orton returning to singles competition. Overall, Orton has won eleven total championships in WWE, including being a nine-time world champion, having won the World Heavyweight Championship three times and the WWE Championship six times. He is also the winner of the 2009 Royal Rumble match.

Darren Kenneth Matthews (born 10 May 1968) is an English professional wrestler, author and color commentator currently signed to WWE and competing on the SmackDown brand under the ring name William Regal. He is also known for his time in World Championship Wrestling under the ring name Steven Regal. Having started his career wrestling on the carnival circuit in England, Matthews moved on to wrestle around the world in countries such as Germany and South Africa, before being called up to World Championship Wrestling in 1993. In 2000, after leaving WCW, Matthews joined the World Wrestling Federation (later World Wrestling Entertainment and now just WWE), where he became commissioner. More recently he has been General Manager of Raw, the 2008 King of the Ring and is currently the Official Match Coordinator for NXT Redemption.

Never a world champion, Matthews has, nonetheless, achieved considerable championship success in professional wrestling. Throughout his career, he has won more than 60 titles worldwide, including four in WCW and 13 in WWE. He has overcome multiple drug problems as well as a major heart defect during his career, and he has written an autobiography, Walking a Golden Mile.