Joker and Penguin are mentioned in “I’ll be Judge, I’ll be Jury”
Although Batwoman features a Gotham in which Batman hasn’t acted for three years, the series continues to show villains that have stung the hero’s life throughout his career. After going through Silence / Tommy (Gabriel Mann), the CW production mentioned two of the Dark Knight’s oldest villains.
Following the death of a well-known prosecutor in Gotham’s history, the series lists the illustrious criminals who have been convicted of the lawyer. Among the names was Jack Napier, name of the Jack Nicholson Joker in the 1989 Batman movie. The name would continue to be associated with the crime clown in different incarnations of the villain, especially in Sean Murphy’s HQ White Knight.
At another point, Kate (Ruby Rose) and Luke (Camrus Johnson) investigate the killer’s methods and find that he has been mimicking ways the city authorities are used to execute death row criminals. One of the victims of the new villain is shot dead, an execution used at the time of Mayor Cobblepot. The surname refers to Oswald Cobblepot, identity of the Penguin. Despite the reference, the dialogue makes it unclear whether the mayor was the villain or an ancestor.
Batwoman is the new Arrowverso series, which covers several other CW hero series: Arrow, The Flash, Supergirl and Legends of Tomorrow.