Mason Lee (born May 30, 1990) is a Taiwanese-American actor. He is the son of Ang Lee, a director, and Jane Lin, a microbiology researcher. He is best known for playing the role of Teddy in The Hangover Part II. Mason Lee (born May 30, 1990) is a Taiwanese-American actor. He is the son of Ang Lee, a director, and Jane Lin, a microbiology researcher. He is best known for playing the role of Teddy in The Hangover Part II.