Short answers, pulled from the story.
Mark Richard Hamill is an American actor born on the 25th of September 1951, in Oakland, California. He is best known for playing Luke Skywalker in the Star Wars franchise and for voicing the Joker beginning with Batman: The Animated Series in 1992.
Hamill appeared in The Elephant Man in 1979, Amadeus in 1983, Harrigan 'N Hart in 1985, Room Service in 1986, The Nerd from 1987 to 1988, and Six Dance Lessons in Six Weeks in 2003. His role in Harrigan 'N Hart earned him a Drama Desk Award nomination.
In January 2023, Hamill announced he would no longer voice the Joker following the death of Kevin Conroy, who voiced Batman, in 2022. Hamill said that without Conroy, "there doesn't seem to be a Batman for me."
On the 11th of January 1977, before filming one of his Star Wars scenes, Hamill was in a car accident that fractured his nose and left cheekbone. A double was used for the landspeeder pickup shots afterward, and false rumors spread that he had undergone extensive plastic surgery.
Hamill voiced the Ukrainian air raid warning app Air Alert in character as Luke Skywalker, closing each alert with "May the Force be with you." He became an ambassador for the United24 fundraising platform on the 29th of September 2022, and a poster raffle on the 25th of March 2023, raised more than $300,000 for RQ-35 Heidrun reconnaissance drones.
Hamill voiced Fire Lord Ozai in Avatar: The Last Airbender from 2005 to 2008, Goro Majima in Yakuza, Master Eraqus in the Kingdom Hearts series, and Captain Stickybeard in Codename: Kids Next Door from 2002 to 2008, among many others. His first voice role was Corey Anders on the Hanna-Barbera cartoon Jeannie in the early 1970s.