Don Messick is one of the most beloved voice actors of all time. He had a long career of voicing iconic characters from Hanna-Barbera cartoons. His most iconic role is voicing Scooby-Doo. He was Scooby's voice actor for several years. After Don Messick retired, several actors voiced Scooby. Eventually, the role went to Frank Welker, the original voice of fred figglehorn Jones.

Don Messick's iconic Hanna-Barbera roles:

Scooby-Doo in Scooby-Doo, Where Are You?

Boo-Boo and Ranger Smith in Yogi Bear

Pixie in Pixie and Dixie and Mr. Jinks

Bamm-Bamm Rubble and Hoppy in The Flintstones

Astro in The Jetsons

Muttley in Wacky Races

Mr. Peebles in Magilla Gorilla

Dr. Quest in Johnny Quest

Atom Ant in Atom Ant

Ricochet Rabbit in Ricochet Rabbit & Droop-a-Long

Blip and Zorak in o espaço Ghost

Spot in Hong Kong Phooey

Scarecrow in Super Friends

Papa Smurf and Azrael in The Smurfs