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This article is about the series. For other uses, see Jellystone.
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On-screen title card.
Created by C.H. Greenblatt
Network HBO Max
Production company Warner Bros. Animation
Distributor Warner Bros. Television
Original release July 29, 2021
Run time 21 minutes
Starring Jeff Bergman
C.H. Greenblatt
Grace Helbig
Jim Conroy
Georgie Kidder
Katie Grober
Ron Funches
Niccole Thurman
Paul F. Tompkins
Ulka Simone Mohanty
Thomas Lennon
Jenny Lorenzo
Andrew Frankel
Bernardo de Paula
Dana Snyder
Executive producer(s) C.H. Greenblatt
Sam Register
Producer(s) Adam Middleton
Ann Tran
Music composed by Ego Plum
Writer(s) C.H. Greenblatt
Ben Gruber
Ian Wasseluk
Careen Ingle
Melody Iza
Hannah Ayoubi
Kaitlyn Graziano
Ian Mulcher
Yotam Perel
Director(s) Careen Ingle
Aaron Austin
Hannah Ayoubi
Ian Wasseluk
Series navigation
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Jellystone! is an American animated slapstick comedy web television series produced by Warner Bros. Animation for Max, formerly HBO Max. It began in 2021. It is the seventh Yogi Bear series after The Yogi Bear Show, and features guest appearances of characters from other Hanna-Barbera series.

In the town of Jellystone, Yogi, Boo Boo, and Cindy work as residents of Jellystone Hospital, where they are regularly called upon to provide medical assistance in comical emergencies. The day-to-day lives of Jellystone's citizens is also chronicled, which include but are not limited to, Mayor Huckleberry Hound, Mr. Jinks, Augie Doggie, Doggie Daddy, Jabberjaw, Squiddly Diddly, Loopy De Loop, El Kabong, Top Cat, Captain Caveman, Peter Potamus, Snagglepuss, Magilla Gorilla, Jonny Quest, Hadji, and Shazzan.

Throughout the series, various guest stars would recurrently make appearances, such as Winnie Witch, Mildew Wolf, Grape Ape, Pixie and Dixie, Paw Rugg, Maw Rugg, Floral Rugg, Yippee, Yappee, Yahooey, Lambsy Divey, Bristlehound, Ding-a-Ling, Hokey Wolf, Ruff, Reddy, The King, Yuka Yuka, Clyde, Big H, Skids, Hair Bear Bunch, CB Bears, the Neptunes, the Teen Angels, Clue Club, Snooper, and Blabber.



C.H. Greenblatt began development in February 2018, taking a year and a half to get the series approved, when it officially went into production in August 2019.[1] It was officially announced on October 29, 2019.[2] For the first few months, work began in the studio, although the crew was forced to work from home when the COVID-19 lockdown began. Despite continuing, the production took twice as long, because of direct contact in the studio being substituted with video chats and online screenings.[3]

Characters that won't appear in the beginning, may appear later on if the series goes on long enough.[4]

An official press release and trailer were unveiled on June 24, 2021.[5]

On February 22, 2022, WarnerMedia announced the second season (or more likely the first half of season 1) would drop on HBO Max in the next month, on March 17, consisting of 19 episodes.[6]

On March 2, 2022, WarnerMedia ordered 40 more episodes.[7] These began airing on February 22, 2024.


Sarah Noonan and Agnes Kim were the casting directors.

Jeff Bergman was announced to be voicing Yogi, among unspecified others, in September 2020.[8] The rest of Bergman's roles and further cast, such as Greenblatt voicing Boo Boo, among others, was revealed on June 24, 2021.[5]

Andy Merrill, who previously voiced Brak on Space Ghost Coast to Coast and The Brak Show, confirmed in a tweet that he reprised his role for an upcoming episode.[9]

As accidentally revealed by his talent agency in an Instagram post, Greg Eagles, the voice of Grim in The Grim Adventures of Billy & Mandy, will reprise his role for an upcoming special which will see various non Hanna-Barbera cartoons appear in Jellystone following a rift through time and space.[10]


The music and themes were composed by Ego Plum.


Similarly to The Simpsons couch gag, where something different happens every time the Simpsons family would run to their couch in the opening theme song, different accidents knock down buildings in a domino-like effect in the Jellystone! theme song:

  1. Bleep's spaceship.
  2. Mildew knocks into a fire hydrant.
  3. Grape Ape's large body.
  4. Speed Buggy revs up.
  5. While all searching for clues, Undercover, Snooper, and Blabber knock into Inch High, which causes Undercover to trip and topple into one of the buildings.
  6. Tubb taking a bite of a hot dog but the weenie falls out and crashes into a building.
  7. Dick Dastardly orders Muttley to jump on a plank which knocks over one of the buildings into the others.
  8. Space Ghost's Phantom Cruiser.
Title Original air date
1x01 July 29, 2021
1x02 July 29, 2021
1x03 July 29, 2021
1x04 July 29, 2021
1x05 July 29, 2021
1x06 July 29, 2021
1x07 July 29, 2021
1x08 July 29, 2021
1x09 July 29, 2021
1x10 July 29, 2021
1x11 July 29, 2021
1x12 July 29, 2021
1x13 July 29, 2021
1x14 July 29, 2021
1x15 July 29, 2021
1x16 July 29, 2021
1x17 July 29, 2021
1x18 July 29, 2021
1x19 July 29, 2021
1x20 July 29, 2021
1x21 October 21, 2021
1x22 March 17, 2022
1x23 March 17, 2022
1x24 March 17, 2022
1x25 March 17, 2022
1x26 March 17, 2022
1x27 March 17, 2022
1x28 March 17, 2022
1x29 March 17, 2022
1x30 March 17, 2022
1x31 March 17, 2022
1x32 March 17, 2022
1x33 March 17, 2022
1x34 March 17, 2022
1x35 March 17, 2022
1x36 March 17, 2022
1x37 March 17, 2022
1x38 March 17, 2022
1x39 March 17, 2022
1x40 March 17, 2022
2x01 February 22, 2024
2x02 February 22, 2024
2x03 February 22, 2024
2x04 February 22, 2024
2x05 February 22, 2024
2x06 February 22, 2024
2x07 February 22, 2024
2x08 February 22, 2024
2x09 February 22, 2024
2x10 February 22, 2024
2x11 February 22, 2024
2x12 February 22, 2024
2x13 February 22, 2024
2x14 February 22, 2024
2x15 February 22, 2024
2x16 February 22, 2024
2x17 February 22, 2024


Title Number Air date
"Kid Styles for Old People! Part One" 1 September 13, 2021
"Kid Styles for Old People! Part Two" 2 September 18, 2021
"Welcome to Magilla's" 3 September 25, 2021
"Cooking With Winsome Witch" 4 October 2, 2021
"Kabong It!" 5 October 9, 2021
"Health & Safety with Doggie Daddy" 6 November 27, 2021
"Wait-Tea" 7 December 4, 2021


Premiere dates of countries are in order of release:


Celebrity guests




Season 1, part 1 trailer:

Season 1, part 2 trailer:

Season 2, part 1 trailer:


  1. ^ Greenblatt, C.H. (October 20, 2019). "Greenblatt began production in February 2018". Tumblr. Retrieved September 25, 2020.
  2. ^ Hipes, Patrick (October 29, 2019). "HBO Max Sets New Looney Tunes, Hanna-Barbera Cartoons, Robert Zemeckis Hybrid Series ‘Tooned Out’, More For Kids & Family Slate". Deadline. Retrieved September 25, 2020.
  3. ^ Zahed, Ramin (July 21, 2020). "Watch: Animation Masters Panel on ‘Creating Relevant Toons’". Animation Magazine. Retrieved September 25, 2020.
  4. ^ Nerd Armada (January 22, 2020). "More will come if show goes longer". Tumblr. Retrieved September 25, 2020.
  5. ^ a b c Milligan, Mercedes (June 24, 2021). "Trailer: Hanna-Barbera Favorites Return in HBO Max Original ‘Jellystone!’". Animation Magazine. Retrieved June 24, 2021.
  6. ^ Media Release (February 22, 2022). "This March Stream “Winning Time: The Rise of the Lakers Dynasty,” Oscar® Nominees “Dune,” “King Richard” “Drive My Car,” “West Side Story,” And More On HBO Max". WarnerMedia. Retrieved February 23, 2022.
  7. ^ Steinberg, Brian (March 2, 2022). "WarnerMedia Orders Extra Episodes of ‘Jellystone’ Ahead of Season 2". Variety. Retrieved March 2, 2022.
  8. ^ Carr, Martin (September 8, 2020). "Exclusive Interview – Jeff Bergman on Our Cartoon President, Looney Tunes, Space Jam 2 and more". Flickering Myth. Retrieved September 25, 2020.
  9. ^ Merrill, Andy. (deleted tweet). Twitter.