McGrory was born in West Chester, Pennsylvania. He studied pre-law at Widener University, where he resided in campus housing on the first floor of Howell Hall. He also studied Criminal Justice at West Chester University. McGrory grew to the height of 7 ft 6 in (2.29 m) and had size 29.5 shoes. He was over five feet tall when he graduated from kindergarten.
Due to his height, he was in demand to play roles in movies cast as a giant—he did so in films such as Bubble Boy, Big Fish, House of 1000 Corpses and The Devil's Rejects and television shows including Malcolm in the Middle, Charmed and Carnivàle.
The Guinness Book of World Records also gave him the title of the tallest actor, the largest toe, and having the world's largest feet not caused by Elephantiasis—size 29½. He also featured in Marilyn Manson's music video "Coma White" and on the cover of Manson's VHS God is in the TV. He can also be seen on the Blondie's video for their 2003-hit "Good Boys".
At the time of his death he was playing André the Giant in a film about the wrestler's life. He lived in Sherman Oaks, California, with his girlfriend Melissa. On August 9, 2005, Matthew McGrory died of natural causes at age 32. The Devil's Rejects was dedicated to him.
|2000||The Dead Hate the Living!||Gaunt|
|2001||Bubble Boy||Human Sasquatch|
|2002||Men in Black II||Tall Alien||(uncredited)|
|2003||House of 1000 Corpses||Tiny Firefly|
|Big Fish||Karl the Giant|
|2004||Big Time||Richard Blunderbore|
|Planet of the Pitts||Toto|
|The Devil's Rejects||Tiny Firefly|
|2008||Andre': Heart of the Giant||André "The Giant" Roussimoff||(Incomplete due to McGrory's death)|