Marvel DC Crossover

Was the Joker in the Batman ?

The Batman release on 4 March 2022

Barry Keoghan as Joker  

Barry Keoghan also Appear in Eternals (2021)

Unseen Arkham Prisoner  

Barry Keoghan came to prominence in the 2017 film 'The Killing of a Sacred Deer 

(The batman 2022 Joker scene deleted) 

he was not an American nor a teen-ager, born in Dublin on 17th October 1992 and has a brother Eric 

Arkham Hospital