Possible Clues:

• 'Star Wars' Jedi
• Skywalker's teacher
• In a Weird Al Yankovic song, he 'looks like a Muppet, but he's wrinkled and green'
• Green sage of films
• His planet of exile is Dagobah
• Jedi with a big forehead
• 'Patience you must have' speaker
• Robe-wearing trainer of cinema
• Baby ___ ("The Mandalorian" nickname)
• Character in exile on Dagobah