Jason Griffith (also known as J. Griff, Adam Caroleson or DJ Tanner) is an English voice actor in the Pokémon Anime series who provides the voice of Cilan. He also provided the voices of Looker, Brawly and many other characters in the series. He is best known outside of Pokémon as the voice of Sonic the Hedgehog and Shadow the Hedgehog in Sonic X and in the games from 2005 to 2010.
- Cilan (BW005-BW143, movies 14-16)
- Sir Aaron (Movie 8)
- Timmy Grimm
- Cheren (Pokémon Black 2 and White 2 animated trailer)
- Sonic the Hedgehog, Shadow the Hedgehog (Sonic X)
- Sonic the Hedgehog, Shadow the Hedgehog, and Jet the Hawk (Sonic the Hedgehog (video game series.) (2005-2010)
- Caswell, Nistro (Yu-Gi-Oh! ZEXAL)
- Primo, Aporia, Bruno, The Ghost (Yu-Gi-Oh! 5D's)
- Atticus Rhodes (Yu-Gi-Oh! GX)
- Lord Darkar (Winx Club (4kids adaptation))
- Tom Majors/Major Tom (Chaotic)
- Sulfus (Angel's Friends)
- Dragon Assault Squad member (Tai Chi Chasers)
- Announcer for Nintendo 3DSXL and New Super Mario Bros. 2 commercials.
- Jason was the only 4Kids VA not involved with the original Yu-Gi-Oh! series.
- In the Pokémon series he went on hiatus with the other 4Kids voice actors after 4Kids lost the dubbing rights to Pokémon when season 9 of the dub started, but he later returned to voice Hamilton in Cream of the Croagunk Crop! and later became part of the new cast as Cilan.
- Jason is best known for his work with SEGA as the voice of Sonic the Hedgehog until 2010, he also provided the voices of Shadow the Hedgehog and Jet the Hawk until 2010 when the cast got replaced.