Mark DeCarlo is an American actor, television host, comedian, travel, internet personality, and foodie expert. He is currently known for being a contributor to WLS-TV morning show Windy City Live, a locally produced Chicago program that replaced The Oprah Winfrey Show following its 2011 ending. DeCarlo has been awarded three local Emmy Awards for his work on Windy City Live.

DeCarlo's first major exposure came in 1991 when he became host of the dating game show Studs. He is also known for providing the voice of Hugh Neutron, the title character's father in The Adventures of Jimmy Neutron, Boy Genius for Nickelodeon and for portraying Alec Berg in the Seinfeld episode, “The Face Painter”. DeCarlo authored “A Fork on the Road: 400 Cities, 1 Stomach” which is a comedic travelogue & cook book published by Lyons Press.DeCarlo rose to influencer-style fame on the internet in July 2021 when Hugh Neutron gained a meme-centric cult following, in an attempt to get the Jimmy Neutron character into the Nickelodeon All-Star Brawl video game.