Having lost his hearing in an accident, the character wishes to 'wreak havoc with an invention of his own.' At this point it doesn't sound like the role has actually been cast yet, but that may be something we hear further developments about in the coming weeks. Harrison Wells (being played by Tom Cavanagh on the show). According to their sources, after the winter break audiences will be introduced to a new character named Hartley who was previously a student of Dr. This interesting scoop comes to us from TV Line, which has gotten its hands on an early description of how the new character will be portrayed on Flash.