Harrison Wells is the name of several fictional characters portrayed by Tom Cavanagh in The CW's Arrowverse franchise, primarily the television series The Flash. The character, created by Geoff Johns, Greg Berlanti, and Andrew Kreisberg, is an original creation for the series and is not based on any existing character appearing in comics published by DC Comics. Most versions of Wells are from parallel universes, often defined by their high level of intelligence and scientific knowledge.