Frank Welker

Franklin Wendell Welker (born March 12, 1946) is an American actor and voice actor, best known as the voice of both Fred Jones and Scooby-Doo from the Scooby-Doo franchise (the former since the franchise's inception in 1969 and the latter since 2002), the voices of Megatron and Soundwave in the Transformers franchise, and the voice and vocal effects of Nibbler on Futurama, and the voice of Curious George. In 2016, Welker was honored with an Emmy Award for his lifetime achievement.