1. Arlene Gorlonka

 

Speed Buggy was one of several successful Hanna-Barbera clones of its hit Scooby-Doo. Substitute the Great Dane with a talking anthropomorphic dune buggy and it's essentially the same show. "Tinker" looked and acted a whole lot like Shaggy. And then there was Debbie, the Daphne, if you will. The mystery-solving teen was voiced by none other than Howard Sprague's girlfriend, Millie!

2. Howard Morris

 

Where to even start with Howard Morris? The Ernest T. Bass actor lent his voice to countless characters, from just about every animal "technology" on The Flintstones to denizens of McDonaldland. We wanted to point out, in particular, that he also gave life to some cartoon headliners. He was the original voice of Atom Ant for Hanna-Barbera.

3. Don Knotts

 

Late in his career, in the early 21st century, the former Barney Fife voiced "Wormie" the worm in eight installments of the Hermie series, centered around a wholesome caterpillar. The TV movies and video reunited Knotts with his old comedy partner Tim Conway, who provided the voice of Hermie.

Image: GlueWorks Entertainment / Tommy Nelson

4. Ron Howard

 

It might seem obvious that Ron Howard played Richie Cunningham, but the live-action actors do not always take the time (er, money) to voice the animated versions. Fonz and the Happy Days Gang took the Milwaukee teenagers on a time-traveling adventure with a dog named Mr. Cool. Indeed, Ron Howard voiced his character in this 1980 Saturday morning cartoon, which is particularly surprising once you consider he left Happy Days as a full-time cast member in April 1980. So, the following TV season, he was playing Richie in a cartoon — but not on a sitcom!

5. Hal Smith

 

Like Howard Morris, Hal Smith deserves a lengthy list of his own cartoon credits. There are dozens, from Flintheart Glomgold in DuckTales to Owl in Disney's Winnie the Pooh. We're going to focus on a beloved character you might not associate with Otis Campbell — Goliath the dog from Davey and Goliath! The Christian claymation series sticks in the memory due to its visual similarity to Gumby.

6. Jack Burns

 

Burns played Barney's replacement, Warren, in the sixth season of The Andy Griffith Show. As a voice actor, you might know him best as Vince the crash test dummy in a series of PSAs for the U.S. Department of Transportation. But he has an interesting link to animation history. Wait Till Your Father Gets Home was a spoof of All in the Family produced by Hanna-Barbera in the 1970s. It also happened to be the only primetime cartoon to air for more than a single season between The Flintstones and The Simpsons. Burns voiced the neighbor, Ralph Kane.

7. Allan Melvin

 

Yep, you're looking at Magilla Gorilla himself! Fun fact: Magilla lived in a pet store owned by Melvin Peebles. Who voiced that character? Howard Morris, of course.

8. Olan Soule

 

Mayberry's scrawny choir director might not strike you as a vicious vigilante. Sure enough, though, Olan Soule played both John Masters of Mayberry and Batman of Super Friends!

9. Clint Howard

 

Little Leon, the cowboy with a sandwich (emphasis on boy), was none other than Ron Howard's little brother, Clint. He teamed with Mayberry regular Hal Smith in the Disney Winnie the Pooh cartoons, voicing little Roo!

10. Pam Ferdin

 

Ferdin has a small role in Mayberry, but it is too good to overlook. Early in season six, in "Bazaar," she shows up in the Taylor kitchen with her angry father, who demands a meal. She shows off her crying skills. Sure enough, she would voice Lucy in several Peanuts features and specials over the subsequent years. Does she look like someone you can trust with a football?