Frank Welker

Frank Welker is an American voice actor, specializing in animal and other creature vocal effects. Some of his roles include Doctor Claw from Inspector Gadget, Abu from Aladdin, Nibbler in Futurama, and Curious George. His most popular roles outside of Scooby-Doo, is undoubtedly as the voices of Transformers Generation 1 and Transformers: Prime Megatron and Soundwave. He has been the voice of Garfield the cat since 2005.

Scooby-Doo (film)
This role was for CGI characters in a live-action film. He shared the role with Jess Harnell.

Scooby-Doo! The Mystery Begins
This is for a CGI character in a live-action film.

Scooby-Doo! Curse of the Lake Monster
This is for a CGI character in a live-action film.