Richard Griffiths is the biggest man in Harry Potter

Richard Griffiths (born 31 July 1947) is a Tony award winning English actor who has appeared on stage, film and television. He has been awarded the Laurence Olivier Award for Best Actor, the Drama Desk Award for Outstanding Actor in a Play, the Outer Critics Circle Award for Best Featured Actor in a Play, and the Tony Award for Best Performance by a Leading Actor in a Play, all for his role in the play The History Boys.

It Shouldn't Happen to a Vet (1975) Superman II (1980) Breaking Glass (1980) Ragtime (1981) The French Lieutenant's Woman (1981) Chariots of Fire (1981) Gandhi (1982) Britannia Hospital (1982) Gorky Park (1983) A Private Function (1984) Greystoke - The Legend of Tarzan, Lord of the Apes (1984) Shanghai Surprise (1986) Withnail and I (1987) The Naked Gun 2½: The Smell of Fear (1991) King Ralph (1991) Blame It on the Bellboy (1992) Guarding Tess (1994) Funny Bones (1995) The Canterbury Tales (1998) Sleepy Hollow (1999) Vatel (2000) Harry Potter and the Philosopher's Stone (2001) Harry Potter and the Chamber of Secrets (2002) Harry Potter and the Prisoner of Azkaban (2004) Stage Beauty (2004) Opa! (2005) The Hitchhiker's Guide to the Galaxy (2005) Venus (2006) The History Boys (2006) Harry Potter and the Order of the Phoenix (2007)