Jack Patrick DeSena (born John Patrick DeSena; December 6, 1987, in Boston, Massachusetts) is an American screen and voice actor. He is best known for his work on the sketch comedy series All That, having joined the show's cast at the start of its 7th season in 2001 (he tied with Logan Lerman for the 2005 Young Artist Award for Best Performance in a TV Series (Comedy or Drama) - Leading Young Actor for All That).
His family moved to Irvine, California in 1999 and he attended school there. He was a very active member of the international ComedySportz troupe (a comic improvisation team that participates in games as seen on Whose Line is it Anyway?). He also did voice work for the character of Sokka on the Nickelodeon series Avatar: The Last Airbender, where he rapidly gained recognition for his skilled and clever ad-libbing.
De Sena worked on the online mockumentary web series Dorm Life, a 2008 Webby Honoree for Best Writing and Comedy: Individual Short or Episode. De Sena appeared on an episode of King of the Hill, "Luanne Gets Lucky." De Sena has also appeared in an episode of Generator Rex, "Crash and Burn." In 2012, De Sena appeared on the Hulu original series Battleground. In 2013, he appeared as the judge of the texting competition and later as an airport investigator on the Nickelodeon sitcom Sam & Cat. In 2014, he voiced Robin in the animated film JLA Adventures: Trapped in Time. He is also known as "Mr. Roberts" in the TV series 100 Things to Do Before High School, starting in 2014.