<Tr> <Th> Nationality </Th> <Td> American </Td> </Tr> <P> Jerome Valeska is a fictional character created by producer and screenwriter Bruno Heller for the television series Gotham, and played by actor Cameron Monaghan . The character acts as a tribute to the Batman supervillain the Joker, as well as exploring the mythology of the character . </P> <P> Cameron Monaghan has garnered praise from actor Mark Hamill (who is notable for voicing the Joker in the DC Animated Universe). </P> <P> Jerome Valeska is the son of Haly's Circus performer and snake dancer Lila Valeska, who is found brutally murdered, a case which is investigated by Detective Jim Gordon . Jerome at first appears to be an innocent, polite young man, and seems devastated by his mother's death . Gordon later brings him into interrogation, where he reveals that he knows Jerome is responsible for her death . Gordon also brings in Jerome's long - lost father, blind fortune teller Paul Cicero, who is one of many men that Lila had a fling with . Having been caught, Jerome shows his true colors when he says he killed his mother for being "a nagging, drunken whore" and starts laughing maniacally . </P>

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