You are already booped.
@SquiggyBomb
I know, both of ‘em. And the Earth-3 version is all-out Joker in design, which lets you know he really could pull it off.
Some might think he’s too old by now, but the facepaint hides that a lot, and besides, Jack Nicholson was in his fifties (and though a less serious portrayal, Cesar Romero was in his sixties) at the time of playing Mistah J. Hamill’s still got the voice, and as the Earth-3 Trickster he pulls off the look (if color-swapped.)
If Batman continues to be played the way he has been lately (as a version who’s been doing this a very long time and getting a bit battle-weary and such) then a veteran Batman’s nemesis could be a Joker whose history of never staying down spans many years.