Gluck is of part-Japanese descent; his paternal grandmother is a Japanese American who married Jay Gluck, an archaeologist and self-described "Japanophile". Their son (and Gluck's father), Cellin, is a film director.
Roles:
- The Office (2010) as Half Bred
- Just Go with It (2011) as Michael Murphy / Bart Maccabee
- United States of Tara (2011) as Monty
- Private Practice (2011-13) as Mason Warner
- Back in the Game (2013-14) as Danny Gannon
- Silicon Valley (2014) as Adderall Boy
- Red Band Society (2014-15) as Charles "Charlie" Hutchison
- Batman vs. Robin (2015) as Young Bruce Wayne
- About a Boy (2015) as Clay
- All Hallows' Eve 2 (2015) as Max
- Life in Pieces (2015) as Aiden
- Middle School: The Worst Years of My Life (2016) as Rafael "Rafe" Khatchadorian
- Why Him? (2016) as Scotty Fleming
- The Mick (2017-18) as Dylan
- American Vandal (2017-18) as Sam Ecklund
- Man with a Plan (2017) as Tyler
- The Boxcar Children - Surprise Island (2018) as Henry (voice)
- Big Time Adolescence (2019) as Monroe "Mo" Harris
- Tall Girl (2019) as Jack Dunkleman
- Locke & Key (2020) as Gabe
- Love Life (2020) as Young Luke Ducharme
