November 6, 1957
Burbank, California, U.S.
Clarke first portrayed Simba in a number of episodes of The Lion King's Timon & Pumbaa.
His most major role as Simba was his singing voice in The Lion King II: Simba's Pride.
He also voiced Simba in Kingdom Hearts II, as Matthew Broderick was unavailable.
- Barnyard: The Original Party Animals - Freddy
- Back at the Barnyard - Freddy
- Aladdin - Additional Voices
- Attack of the Killer Tomatoes - Igor / Tomacho
- The Zula Patrol - Multo / Bula / Pluto / Saturn
- Avatar: The Last Airbender - Lao Bei Fong (in "The Blind Bandit")
- The Avengers: Earth's Mightiest Heroes - Doc Samson / Constrictor / Vector
- The California Raisins - Bebop
- Captain Planet and the Planeteers - Ooze (1990–1993) / Additional Voices
- Casey Jr. The Circus Engine & Friends - Casey Jr. / Casey Jones / Johnny
- Clifford the Big Red Dog - Machavelli / Mr. Mark Howard / Mr. Dink / Ad Announcer
- Clifford's Puppy Days - Mr. Mark Howard
- Akira - Shōtarō Kaneda / Councilman 1 / Scientist 2 (as Jimmy Flinders)
- Around the World with Willy Fog - Rigadon / Johnson / Ralph (as Jimmy Flinders)
- Bleach - Yasochika Iemura
- Dogtanian and the Three Muskehounds - Dogtanian (as Jimmy Flinders)
- Doomed Megalopolis - Junichi Narutaki
- Duel Masters - Toru / Shori / Stu: Game Announcer #2
- G-Force: Guardians of Space - Dirk Daring / Red Impulse
- Honey and Clover - Takumi Mayama
- Macron 1 - Jason Templar (as Jimmy Flinders)
- Monster - Richard Braun
- Saber Rider and the Star Sheriffs - Additional Voices
- Teenage Mutant Ninja Turtles (1987) - Leonardo, Rocksteady, OverDrive, Mung
- Marvel Anime: X-Men - Professor X
- Teenage Mutant Ninja Turtles (2012) - 80's Leonardo