Jerome and Jeremiah Valeska are characters and antagonists in the Fox television series Gotham. They are identical twin brothers portrayed by Cameron Monaghan. The series is a crime drama developed by Bruno Heller based on the Batman mythos in comic books published by DC Comics.

Gotham is an American superhero crime drama television series developed by Bruno Heller, produced by Warner Bros. Television and based on characters from the Batman mythos in comic books published by DC Comics. The series originally aired on Fox from September 22, 2014, to April 25, 2019, over five seasons, comprising a total of 100 episodes. It features an ensemble cast that includes Ben McKenzie as James "Jim" Gordon, Donal Logue as Harvey Bullock, and David Mazouz as Bruce Wayne. The show follows Gordon's early days at the Gotham City Police Department following the murder of Bruce's parents, as well as the origin stories of Batman's infamous rogues gallery.