A challenge is a general term referring to things that are imbued with a sense of difficulty and victory.

Challenge may also refer to:

Lucas Cruikshank (born August 29, 1993) is an American comedic actor. Living in Columbus, Nebraska, he created the character Fred Figglehorn, and the associated Fred series for his channel, on the video-sharing website YouTube. These videos are centered on Fred Figglehorn, a fictional 6-year-old who has a dysfunctional home life and "anger management issues".

Cruikshank, while testing character ideas, created the Fred character in a Halloween video, and uploaded it to a YouTube channel that he had started with his two cousins. Upon the success of Fred, he started a video series, and set up the Fred channel in April 2008. By April 2009, the channel had over one million subscribers, making it the first YouTube channel to do so, and the most subscribed channel at the time. In December 2009, Cruikshank filmed Fred: The Movie, which aired on Nickelodeon, in September 2010. Nickelodeon has created a franchise surrounding the character, a sequel, Fred 2: Night of the Living Fred, aired in October 2011, and a TV series, Fred: The Show, is airing, a third movie will air in 2012. In November 2010, Cruikshank attempted to create another character, Doug Derky, and uploaded his blog to the Fred channel. Due to the strong Fred Figglehorn fan base at that channel, the video was left with mostly negative reviews.

James Christian "Jimmy" Kimmel (born November 13, 1967) is an American comedian, actor, voice artist and television host. He is the host of Jimmy Kimmel Live!, a late-night talk show that airs on ABC. Prior to that, Kimmel was best known as the co-host of Comedy Central's The Man Show and Win Ben Stein's Money. Kimmel is also a television producer, having produced shows such as Crank Yankers, Sports Show with Norm Macdonald, and The Andy Milonakis Show.

Kimmel was born in the Mill Basin neighborhood of the New York City borough of Brooklyn, the eldest of three children of Joann (née Iacono), a homemaker, and James Kimmel, an IBM executive. He is Roman Catholic and, as a child, served as an altar boy. Kimmel is of German and Irish descent on his father’s side and Italian descent on his mother’s side. His uncle, Frank Potenza, appeared on Jimmy Kimmel Live! as a regular from 2003 until his death in 2011.

The family moved to Las Vegas, Nevada, when he was nine years old. He graduated from Ed W. Clark High School and then attended University of Nevada, Las Vegas for one year before attending Arizona State University for two years without completing a degree.