While he is undoubtedly the most famous and critically acclaimed portrayal of the Joker in recent history, there have been other actors who have played the character in Batman movies:
* Cesar Romero played the Joker in the 1960s Batman TV series.
* Jack Nicholson played the Joker in Tim Burton's 1989 film, "Batman."
* Jared Leto played the Joker in David Ayer's 2016 film, "Suicide Squad."
* Joaquin Phoenix played the Joker in Todd Phillips' 2019 film, "Joker."
So, while Heath Ledger's portrayal of the Joker is iconic and unforgettable, he is not the only actor to have played the role in recent Batman movies.