As The Batman ’s ending was unfolding, viewers saw the incarcerated Riddler hit it off with another inmate at Arkham, who was identified as this universe’s Joker. Days later, a deleted scene giving us significant screen time with Barry Keoghan’s Joker was released,

Barry Keoghan’s Joker may get the last laugh in The Batman trilogy. After the Eternals and Saltburn actor made a cameo in 2022’s The Batman movie — and a five-minute deleted scene that was eventually released online — director Matt Reeves insisted that the brief cameo wasn’t setting up The Batman Part II.

Barry Keoghan takes a walk down memory lane as he rewatches scenes from his classic works including 'The Banshees of Inisherin,' 'The Batman,' 'The Killing of a Sacred Deer,' 'Saltburn,' 'Bird' and more.