Which of these actors has not been featured as the Joker in a "Batman" film?

The actors Jack Nicholson (b. April 1937), an American retired actor and filmmaker; Mark Hamill (b. September 1951), an American actor who starred as Luke Skywalker in the "Star Wars" franchise; and Jared Leto (b. December 1971), an American actor and musician known for his method acting in a good many roles, are all individuals who have been featured as the Joker in big screen movies. Respectively Nicholson played the Joker in "Batman" (1989), Hamill voiced acted the Joker in the 1993 theatrical film "Batman: Mask of the Phantasm" and the 2000 film "Batman Beyond: Return of the Joker", and Leto was the Joker in "Suicide Squad" (2016), an American superhero film based on the DC Comics supervillain team Suicide Squad.

Sean Penn (b. August 1960) is an actor who hasn't been featured in any "Batman" film or related movie project as the Joker. Penn has had no correction to any film, any role, or any kind of interest in a "Batman" film whatsoever, featuring the Joker.

Sean Penn is considered a powerhouse film performer capable of intensely moving work; he has gone from strength to strength during a colorful film career. He has also drawn much media attention for his stormy private life and strong political viewpoints.

He first appeared in film roles as a strong-headed/unruly youth; he then was a fast-talking surfer stoner in "Fast Times at Ridgemont High" (1982). Since 1982, he has appeared in at least 68 films. He has been a controversial, progressive, and gifted actor.