Frank Welker

Frank Welker is an actor and well known popular voice artist who voiced Isis, sound effect of a Werewolf, a buyer and a thug in Batman: The Animated Series', Ace the Bat-Hound in Batman Beyond' and it's feature length film Batman Beyond: Return of the Joker where he also voiced Woof the Hyena Man''. ''

He also voiced Batman and Batboy in a Scooby Doo crossover segment of Batman: The Brave and the Bold called Bat-Mite Presents: Batman's Strangest Cases.

His best known voice roles are Fred Jones in Scooby Doo, Megatron in The Transformers and Doctor Claw in Inspector Gadget.

Trivia

 * Frank also provided the voices for various characters in two other series for DC; Superman: The Animated Series and Static Shock.