Early life - Griffin was born in Los Angeles.
His father, Cellin Gluck, is a film director and producer, and his mother, Karin Beck, was a production assistant and line producer.
Griffin's father was born in Wakayama Prefecture, Japan, to American parents, and was partly raised in Kobe, Japan.
His paternal grandparents were Sumi (Hiramoto), who was of Japanese descent, and Jay Gluck, an archaeologist, historian, and Japanophile, who was of Jewish heritage.
Griffin has an older sister named Caroline.
Acting debut - He started acting when he went with his older sister, Caroline, to a summer children's showcase of Guys and Dolls at the Palisades Playhouse.
His first major role was as a three year old in a short film, Time Out, co-produced by his father and directed by Robbie Chafitz.
He had an early TV appearance in an episode of The Office, and played the role of Monty in three episodes of United States of Tara.
Rise to fame - Griffin's big break came in 2011, when he played Michael in the film Just Go with It (starring Adam Sandler and Jennifer Aniston), for which he received a Young Artist Award nomination.
Television - In television, Griffin is notable for his main roles as Charlie in Red Band Society, Mason Warner in Private Practice, and Danny Gannon in Back in the Game.
He also co-starred as Sam Ecklund in both seasons of the Netflix mockumentary series American Vandal and plays Gabe in the Netflix series Locke & Key.
Big screen - In film, Griffin portrayed Rafe Khatchadorian in the film Middle School: The Worst Years of My Life and Jack Dunkleman in the Netflix original movie Tall Girl.
He also starred as a main character in the Hulu movie Big Time Adolescence.
Trivia - Griffin loves swimming, skateboarding, working out, playing Xbox, or hanging out with close friends.
He has a cat, named M.J.
Personal life - He began a relationship with Sabrina Carpenter in 2019.
Social media stats as of June 2020:
13.7K followers on TikTok
40.2K followers on Twitter
1.4M followers on Instagram
Bio / wiki sources: Wikipedia, accounts on social media, content from our users.