Eobard Thawne, otherwise known as Professor Zoom and the Reverse-Flash, is a supervillain appearing in comic books published by DC Comics. Created by John Broome and Carmine Infantino, he made his debut in The Flash #139 (September 1963). The most well-known character to assume the "Reverse-Flash" mantle, Thawne is the archenemy of Barry Allen (the second superhero to be called the Flash), a descendant of Malcolm Thawne, and a maternal forefather of Bart Allen, Thaddeus Thawne, and Owen Mercer. He has been established as one of the fastest speedsters in the DC Universe.
IGN ranked Eobard Thawne as the 31st Greatest Comic Book Villain Of All Time in 2009 and #2 on their Top 5 Flash Villains list in 2015. Tom Cavanagh and Matt Letscher have portrayed the character on various television series set within the CW's live-action Arrowverse.