| Jerome and Jeremiah Valeska | |
|---|---|
| Gotham characters | |
 Cameron Monaghan as Jerome (left) and Jeremiah (right) on Gotham | |
| First appearance | Jerome: "The Blind Fortune Teller" February 16, 2015 Jeremiah: "Mandatory Brunch Meeting" April 5, 2018 |
| Last appearance | Jerome: "That Old Corpse" May 3, 2018 Jeremiah: "The Beginning..." April 25, 2019 |
| Created by | Bruno Heller |
| Portrayed by | Cameron Monaghan |
| In-universe information | |
| Gender | Male |
| Occupation | Criminal (both) |
| Family | Lila Valeska (mother; deceased) Paul Cicero (father; deceased) Zachary Trumble (uncle; deceased) |
| Nationality | American |
Jerome and Jeremiah Valeska are characters and antagonists in the Fox crime drama television series Gotham and associated media. They are identical twin brothers portrayed by Cameron Monaghan.
Each twin adapts different characteristics of the DC Comics supervillain the Joker. Jerome is depicted as a psychotic nihilist who spreads chaos in Gotham City until his eventual death, while Jeremiah is a cunning psychopath obsessed with tormenting Bruce Wayne. In the series finale set ten years after Jeremiah's first appearance, Jeremiah is reinvented and becomes a figurative amalgamation of both Valeska twins over the course of the show, and while never officially adopting the name, becomes thematically representative of the Joker, complete with chemical disfiguration he applies white facepaint over, dyed green hair, red lipstick, dressed in a purple suit with a green undershirt and orange tie, as is the supervillain's traditional iconic appearance.