Collin the Speedy Boy: Mission Hanna-Barbera (or also known as Collin the Speedy Boy: Across the Hanna-Barbera Dimensions) is a American direct-to-video flash-animated film developed by Warner Bros. Animation. It is the second CtSB direct-to-video film. It contains characters from the Hanna-Barbera multiverse.
Collin, Jasmine, Elisha, Riley, Austin and Stacie embarks their epic journey to save the Hanna-Barbera dimensions from T.E Bryte and Dick Dastardly with the help of Huckleberry Hound, Peter Potamus, Yogi Bear and Scooby-Doo.
- Jason Griffith - Collin (main protagonist) and Austin
- Grey DeLisle - Heather; Jasmine (deutagonist), Tootsie, T.E Bryte (main antagonist) and Alexis
- Billy West - Eli and Flappy
- Tara Strong - Morgan Brooke and Lagan
- Hynden Walch - Elisha
- Ashley Johnson - Riley
- Cricket Leigh - Caleigh
- Kathryn Cressida - Stacie (secondary deutagonist), Ariel and Tear Stacie
- Chris Edgerly - Peter Potamus (tritagonist), Huckleberry Hound (tritagonist) and Augie Doggie
- Dan Castellaneta - Yogi Bear (tritagonist)
- Billy West - Boo-Boo Bear, Ranger Smith, Secret Squirrel, Bamm-Bamm Rubble, Elroy Jetson, Pixie and Dixie
- Frank Welker - Scooby-Doo (tritagonist), Dino, Astro and Muttley
- Travis Willingham - Fred Flintstone and Dick Dastardly (secondary antagonist)
- Kevin Michael Richardson - Barney Rubble and Dick Dastardly Jr. (thirdiary antagonist)
- Maurice LaMarche - Quick Draw McGraw, Doggie Daddy and Morocco Mole
- Rob Paulsen - Snagglepuss, George Jetson and Baba Looey
- Steve Blum - Yakky Doodle
- Kath Soucie - Cindy Bear and Judy Jetson
- Tress MacNeille - Wilma Flintstone and Pebbles Flintstone
- Grey DeLisle - Betty Rubble and Jane Jetson
More characters soon.
- Jellystone Town (from Yo Yogi)
- Chris Edgerly will reprise his role as Peter Potamus, who voiced him in the Adult Swim series, Harvey Birdman, Attorney at Law.
- This film marked the first time that Eli appeared without Fang Suckle.
- The film shares the same animation as its show, The Chronicles of Collin the Speedy Boy.
- It takes places 2 months after the events of the second season of The Chronicles of Collin the Speedy Boy.
- In the film, Dick Dastardly have a son named Dick Jr. (whose appearence represents to his teenage counterpart in Yo Yogi).
- It contains elements from various Hanna-Barbera series.
- Jeff Bergman does not reprise his role as Yogi, nor Fred and George.
- Instead, Yogi Bear, Fred Flintstone and George Jetson are voiced by Dan Castellaneta, Travis Willingham and Rob Paulsen, respectively.
- However, he reprises his Looney Tunes roles in Collin the Speedy Boy and Looney Tunes: When Worlds Unite.