From Wikipedia, the free encyclopedia Gattlin Tadd Griffith (born November 13, 1998) is an American actor, best known for portraying Walter Collins in the 2008 film Changeling. He also had episodic roles on TV series such as Supernatural. Griffith was born to Tad and Wendy Griffith. He has three younger brothers, Callder (born June 30), Arrden and Garrison. Description above from the Wikipedia article Gattlin Griffith, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Changeling
(Walter Collins)
The New Daughter
(Sam James)
What Rhymes with Reason
(Jesse Brandt)
Under the Bed
(Paulie Hausman)
Labor Day
(Henry)
3 Holiday Tails
(Freddie Donovan)
Couples Retreat
(Robert)
Green Lantern
(Young Hal)
The River Why
(Bill Bob)
Blood Done Sign My Name
(Tim Tyson)
Joker: Folie à Deux
(Masked Joker Driver)
Incoming
(Shaved Head)
Place of Bones
(Jack)
Uncorked
(Luke Browning)
Init!ation
(Beau Vaughn)
Safety
(Dan)
Catch the Bullet
(Jed Blake)
How I Met Your Mother
(Boy)
Supernatural
(Jesse Turner)
Star Trek: Picard
(Mugger)
The Boys
(Young Gunpowder)
The Boys
(Pig Gunpowder (voice))
Castle
(Tyler Donegal)
Criminal Minds
(Robert Brooks)
Eleventh Hour
(Nicky Harris)
Without a Trace
(Travis Feretti)
Monk
(Matthew)