The term 'Green Sage of Films' is a reference to the character Yoda from the Star Wars franchise. Yoda is a small, green-skinned alien with a long white beard and pointed ears. He is a powerful Jedi Master who has trained many of the main characters in the series. Yoda is known for his wise words and sage advice, which often come in the form of cryptic sayings. He is also known for his unique way of speaking, which is often referred to as 'Yoda-speak'.