Hogwarts School of Witchcraft and Wizardry or simply Hogwarts is the primary setting for the first six books of the Harry Potter series by J. K. Rowling, with each book lasting the equivalent of one school year. It is a fictional British boarding school of magic for witches and wizards between the ages of eleven and seventeen or eighteen. In Harry Potter and the Deathly Hallows, however, most of the book is set outside Hogwarts as main characters Harry Potter, Ron Weasley, and Hermione Granger do not attend their final year of school (though Rowling has stated that Hermione eventually returns to school to complete her N.E.W.T. examinations). The climactic battle of the book, and the series, however, is set at Hogwarts.

Rowling has suggested that she may have inadvertently taken the name from the hogwort plant (Croton capitatus), which she had seen at Kew Gardens some time before writing the Harry Potter series, although the names "The Hogwarts" and "Hoggwart" appear in the 1954 Nigel Molesworth book How To Be Topp by Geoffrey Willans.

Katheryn Elizabeth Hudson (born October 25, 1984), known by her stage name Katy Perry, is an American singer, songwriter and actress. Perry grew up with gospel music, and during her first year of high school she pursued a music career as Katy Hudson, releasing her first studio album called Katy Hudson which failed to chart. She recorded a solo album later, which was never released. After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry.

She first gained recognition with the release of her first mainstream album, One of the Boys in 2008, which spawned three Billboard Hot 100 top-ten songs—"I Kissed A Girl", "Hot n Cold" and "Waking Up In Vegas". Perry supported the album with her Hello Katy Tour. In 2010, her third studio album, Teenage Dream (2010), which topped the Billboard 200 chart, and spawned five number one singles—"California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)"—Teenage Dream was the only album (after Michael Jackson's Bad)—to do so, and the first female in history to achieve this milestone. She embarked on the California Dreams Tour, which grossed nearly $60 million worldwide. Perry re-released the album under the name of Teenage Dream: The Complete Confection on March 26, 2012, and the re-release has already spawned the number-one single "Part of Me".

Craig Ferguson (born 17 May 1962) is a Scottish-American television host, stand-up comedian, writer, actor, director, author, and producer. He is the host of The Late Late Show with Craig Ferguson, an Emmy Award-nominated, Peabody Award-winning late-night talk show that airs on CBS. In addition to hosting that program and performing stand-up comedy, Ferguson has written two books: Between the Bridge and the River, a novel, and American on Purpose, a memoir. He became a citizen of the United States in 2008.

Before his career as a late-night television host, Ferguson was best known in the United States for his role as the office boss, Nigel Wick, on The Drew Carey Show from 1996 to 2003. He also wrote and starred in three films, directing one of them.

Ferguson was born in the Stobhill Hospital in the Springburn district of Glasgow, Scotland to Robert and Janet Ferguson, and raised in nearby Cumbernauld, growing up "chubby and bullied". When he was six months old, he and his family moved from their Springburn apartment to a council house in Cumbernauld. They lived there as Glasgow was re-housing many people following damage to the city from World War II. Ferguson attended Muirfield Primary School and Cumbernauld High School. At age sixteen, Ferguson dropped out of Cumbernauld High School and began an apprenticeship to be an electronics technician at a local factory of American company Burroughs Corporation.