Jellystone!

Jellystone! is a comedic animated television series starring various Hanna-Barbera characters, and it includes regular cameos of an adult Jonny Quest and Hadji.

In the series, Jonny and Hadji run a bowling alley called Quest Bowl in the titular town of Jellystone. The two are often background characters shown on outings together, such as going to a fancy bouncy castle, attending a wrestling match, attending a concert, going to the beach, and taking a sleigh ride. Although not explicit in the show, one of the writers confirmed that Hadji and Jonny are intended to be married.

Jellystone! premiered with the first 10 episodes on July 29, 2021 on HBO Max. A second season has also been released, and the series is renewed for an additional 40 episodes.

Jonny Quest appearances
Characters:
 * Jonny Quest - voiced by Andrew Frankel
 * Hadji- voiced by Fajer Al-Kaisi

Locations:
 * Quest Bowl, a bowling alley run by Jonny and Hadji

My Doggie Dave
The main characters visit Quest Bowl, a bowling alley apparently owned and operated by Jonny Quest and Hadji. Neither character is named or has any lines. Hadji pulls a lever to make changes to the bowling alley, such as to drop a disco ball and to reveal an advanced bowling alley challenge.

The logo for Quest Bowl has "Quest" stylized like the "Jonny Quest" title from the original series. The art above the bowling pins features the Dragonfly and one of Dr. Zin's robot spiders. The advanced bowling alley area also features a robot spider that holds bowling pins.

DNA, A-OK!
Jonny and Hadji are in line to a bouncy castle. Both characters are dressed up, with Jonny in a suit with a bowtie, and Hadji wearing a pink turban and matching coat, and their arms are linked. When the bouncy castle deflates, Jonny and Hadji are bounced around and fall out with the other characters. Jonny is later seen thrown into an ambulance.

Jelly Wrestle Rumble!
Jonny and Hadji are cheering in the audience at a wrestling event.

Welcome to Jellystone
Jonny and Hadji work on the set for the town's film. They create large black planks to use in scenes to make it widescreen. Hadji speaks his first only line of season 1 in this episode: in response to Shazaam saying, "Nice job on those black movie bars, fellows," Hadji responds, "Thank you."

Voice actors
On June 24, 2021, the voice actors for Jonny and Hadji were announced.

Jonny's voice actor Andrew Frankel confirmed he was voicing the character with a post on Instagram on June 27, 2021, and in a video on YouTube on July 28, 2021. Despite this, Jonny has no lines in season 1. In August 2021, Frankel again confirmed he was voicing Jonny, saying that season 1 was "just the first 10 episodes", indicating that he would be voicing the character in future episodes. Jonny had his first dialogue in season 2.

Design
The character designs were made by Melody Iza. Quest Bowl was designed by Luciano Herrera.

Character relationship
Series writer and storyboarder Melody Iza commented on Jonny and Hadji's relationship on Twitter:
 * "I don’t think we were able to have anything that explicitly said or showed it but they’re married".
 * "While we didn’t get to be explicit about it, we definitely believe they’re happily married".

Trivia

 * Jonny's named is spelled "Johnny" in the credits.
 * This is the second time that Jonny Quest and Hadji have been depicted as adults. The first was in the series The Venture Bros., where Jonny is renamed "Action Johnny" and Hadji is "Rajni".
 * This is the first time that Jonny and Hadji are suggested to have a romantic relationship with each other.