Toby Jones – Penguin
The Penguin probably isn’t complex enough to carry a modern Batman movie as the main antagonist, but the character is too iconic to be left out of the DCEU completely. With that in mind, he could easily turn up in a cameo or supporting role in The Batman, perhaps as the crooked owner of the Iceberg Lounge that Bats has to intimidate for info on the city’s underworld. There’s evidence to suggest that the Penguin has been causing mischief in Gotham for much of Batman’s crime-fighting career as well, so an older actor would have to be cast for the role.
The star who most fits the bill, then, is Toby Jones, who has proven himself a natural at portraying despicable characters on numerous occasions (Captain America, Sherlock, The Girl). He’s a frequent supporting player in Hollywood productions, too, so he’s well-suited for a walk-on part as the Penguin. Not to mention his diminutive stature means he would look like the character.
Really, all he would need is a monocle and prosthetic pointed nose to bring Oswald Cobblepot to life.