Jason Adam Griffith^[3] (born 1980) is an American actor from Lakeline, Ohio. He is best known as the voice of Sonic the Hedgehog, Shadow the Hedgehog and Jet the Hawk from 2003 to 2010. The role began with Sonic X (2003-2005) and ended with Sonic & Sega All-Stars Racing (2010). He was replaced by Roger Craig Smith. He was cast in the former role by children's programming block and licensing company 4Kids Entertainment, for which he has also voiced Usopp in One Piece and Brawly in Pokemon, among others. He parted ways with the company in 2010, and he has since done voice work for NYAV Post and DuArt Film and Video.^[4]

Jason Griffith was born in Lakeline, Ohio.^[2] He graduated from the North High School in Eastlake, Ohio in 1999.^[2]

Griffith began his acting career in 1997, at seventeen years old.^[4] He made his feature film debut in the romantic comedy-drama film, Edge of Seventeen in an uncredited role as Scott. He also had an uncredited role as Cassius in the 2008 thriller film, Kill Kill Faster Faster. In television, he appeared in an episode of Blue Bloods as a man wearing a suit inside a red sportscar.

In 2003, Griffith began extensive work as a voice actor. He served as in-house voice talent for the children's television block 4Kids TV, which led him to voice many characters in various animated media including Tom Majors in Chaotic and Miyamoto Usagi in Teenage Mutant Ninja Turtles. He was also an occasional promotional announcer for the block, as well as for The CW4Kids and Toonzai. He also provided the voice of Bongo the Monkey in commercial advertising for Danimals.

Through his voice work as the titular character for the 4Kids English dub of Sonic X, Griffith was brought on by Sega to portray Sonic the Hedgehog (replacing Ryan Drummond), Shadow the Hedgehog (replacing David Humphrey), and Jet the Hawk in the mainline video games for the Sonic the Hedgehog series. The role began with 2005's Shadow the Hedgehog and ended with 2010's Sonic & Sega All-Stars Racing, until role was thereafter succeeded by Roger Craig Smith in 2010. During this time, he was often credited as "Adam Caroleson". In addition, his role as Shadow was passed to Kirk Thornton, while his role as Jet was passed to Michael Yurchak.^[5][4] After he was replaced, he continued to voice Sonic in 4Kids promotions until 2014, when the program came to an end.

From 2011 to 2012, he starred in the web comedy series Casters as Cal. In 2015, he starred in the English dub of the animated children's series Super Wings.^[6]

Griffith married Melissa Ryan on August 15, 2015.^[7][8] They have two sons.^[9][10]