Henry F. Potter (commonly referred to as "Mr. Potter" or just "Potter") is a fictional character and the main antagonist in the 1946 Frank Capra film It's a Wonderful Life. He occupies slot #6 on the American Film Institute's list of the 50 Greatest Villains in American film history (in its 2003 list entitled AFI's 100 Years... 100 Heroes and Villains). Mr. Potter was portrayed by veteran actor Lionel Barrymore.

Throughout the entire film, Henry F. Potter is a heartless, cold, apathetic, and downright evil man. Everything that Mr. Potter does in the film is motivated by money and greed. Be it "saving" George Bailey's clients during a bank run or offering George the job of his dreams, all are thinly veiled plots to fill his own wallet.

Not much is revealed about his personal life aside that he is single, and never has had a wife, children or any close or distant family members, and he uses a wheelchair for reasons that are never explained (which is due to the actor Lionel Barrymore's real-life health conditions). Because of his disability, Potter always has the same mute bodyguard by his side, who travels with him wherever he goes and pushes his wheelchair for him.

Mister may refer to:

James Maitland "Jimmy" Stewart (May 20, 1908 – July 2, 1997) was an American film and stage actor, known for his distinctive voice and persona. Over the course of his career, he starred in many films widely considered classics and was nominated for five Academy Awards, winning one in competition and receiving one Lifetime Achievement award. He was a major MGM contract star. He also had a noted military career and was a World War II and Vietnam War veteran, who rose to the rank of Brigadier General in the United States Air Force Reserve.

James Maitland Stewart was born on May 20, 1908, in Indiana, Pennsylvania, the son of Elizabeth Ruth (née Jackson) and Alexander Maitland Stewart, who owned a hardware store. Stewart's parents were of Scottish descent and Presbyterians. His maternal ancestors served in the American Revolution, the War of 1812 and the American Civil War. The eldest of three children (he had two younger sisters, Virginia and Mary), he was expected to continue his father's business, which had been in the family for three generations. His mother was an excellent pianist but his father discouraged Stewart's request for lessons. But when his father accepted a gift of an accordion from a guest, young Stewart quickly learned to play the instrument, which became a fixture off-stage during his acting career. As the family grew, music continued to be an important part of family life.

Severus Snape is a fictional character in the Harry Potter book series written by J.K. Rowling. In the first novel of the series, he is hostile toward Harry and is built up to be the primary antagonist until the final chapters. As the series progresses, Snape's character becomes more layered and complex. Rowling does not fully reveal the details of his true loyalties until the end of the final book, Harry Potter and the Deathly Hallows. Over the course of the series, Snape's portrayal evolves from that of a malicious and partisan teacher to that of a pivotal character of considerable complexity and moral ambiguity. Snape primarily teaches Potions at Hogwarts, though in the sixth novel he teaches Defence Against the Dark Arts, a position which he was known to have desired throughout the series. He ultimately becomes Headmaster of Hogwarts in the final novel. Rowling has described him as "a gift of a character".

In an interview, Rowling described Snape's character as an "antihero". She has said that she drew inspiration for Snape's character from a disliked teacher from her own childhood, and described Snape as a horrible teacher, saying the "worst, shabbiest thing you can do as a teacher is to bully students." However, she does suggest in the books that he is generally an effective teacher. Although Rowling has said that Gilderoy Lockhart is her only character that she "deliberately based on a real person", Snape was reportedly based, at least in part, on John Nettleship, who taught Rowling chemistry and employed her mother as an assistant at Wyedean School near Chepstow. For Snape's surname, Rowling borrowed the name from the village of Snape, Suffolk. In a 1999 interview, and again in 2004, Rowling singled out Snape as one of her favourite characters to write.