[4] He graduated from the Chapman University's Dodge College of Film and Media Arts in 2003 with a degree in screenwriting.

[4][7][8] Smith's voice work has been called upon by companies such as Disney/Disney Television Animation, Cartoon Network, Xbox Game Studios, Sony, Wal-Mart, Baskin-Robbins, E!

[11] Smith became the third official voice of the Sega character Sonic the Hedgehog in the video game series of the same name beginning in 2010, replacing Jason Griffith.

In January 2021, he revealed on his Twitter account that he would no longer be voicing the character,[16][17] which was later retracted in May 2021, when he announced his return to the franchise.

[18][19] Smith also voices Ezio Auditore da Firenze from the Assassin's Creed series, Chris Redfield in the Resident Evil series, Hawkodile and Richard from Unikitty!, Baron Draxum in Rise of the Teenage Mutant Ninja Turtles Season 2, Captain America / Steve Rogers in several Marvel projects, Deidara in Naruto: Shippuden, Thomas and various other characters in Regular Show, Shinji Hirako in Bleach, Martin Reest in Monster, and Batman / Bruce Wayne in Batman: Arkham Origins, Batman: Arkham Shadow, Batman Ninja, and Superman: Red Son, Kyle Crane in Dying Light and Mirage in Apex Legends.