Billy Dilley's Super-Duper Subterranean Summer is an American animated television series that premiered on Disney XD in June 3, 2017.[1] It is created and executive produced by Aaron Springer, an animation veteran whose extensive credits include working on Dexter's Laboratory, SpongeBob SquarePants, Samurai Jack, The Grim Adventures of Billy & Mandy, Gravity Falls, Wander Over Yonder, and the current run of Mickey Mouse shorts.[2] Springer was also behind the Adult Swim pilot Korgoth of Barbaria.


The show follows the adventures of Billy Dilley (Aaron Springer), a 7th grader who loves science, and his lab partners, Zeke (Tom Kenny) and Marsha (Catie Wayne), who on summer vacation find themselves trapped in a strange world located in the Earth's core.

Cast and characters


The show was first announced in 2014 as a potential pilot.[3] In March 2016, it was confirmed that Disney XD has greenlit the show for a full series.[2]

In 2015, Merriwether Williams was confirmed in a Twitter post by Vincent Waller as one of the show's writers, whilst character designer Robertryan Cory announced on his Facebook page he has been working on the series for over a year before the pickup was officially sealed.


  • Jessica McKenna was originally going to voice the character Billy Dilley, but was replaced by creator Aaron Springer for unknown reasons.
  • Ashley Johnson was originally going to voice Judy, but she was replaced by Sarah-Nicole Robles also for unknown reasons.
  • This is one of the miniseries to be aired on Disney Channel.



  2. 2.0 2.1 Milligan, Mercedes (March 4, 2016). "Disney XD Announces ‘Billy Dilly’ and ‘Country Club’". Retrieved on April 30, 2016.
  3. Amidi, Amid (July 17, 2014). "Disney TV Inks Deals With Aaron Springer, Jhonen Vasquez, Jesse LeDoux, and Ryan Quincy". Retrieved on April 30, 2016.

v - e - d
Billy dilley logo
Billy Dilley's Super-Duper Subterranean Summer
Billy Dilley • Zeke • Marsha • Anaximander • Count Raymond Wretcher • Judy
Season One: "Lab Friends... Forever? / Surviving Billy" • "Calzones / Crab Hands" • "The Date / The Troggies Next Door" • "The Mushroom Prince / Count Wretcher" • "Hey Judy / Welcome to the Hag House" • "Beastie Billy / Zartran" • "K is for Klutz / Tommy X" • "Billy/Willie / The Telltale Wart" • "Ol' MacBilly / Silly Spheres" • "Wretcherous Treachery / Jared" • "Sluggy / Double Bubble" • "The Glorp of the Gorks / Rat's Entertainment!" • "The Battle for Subterranea-Tania"
Billy Dilley Main Title ThemeCatch Me if You Can • Rats Make Everything Better

v - e - d
Walt Disney Television Animation logo
Disney Afternoon Era: 1985–97
The WuzzlesAdventures of the Gummi BearsDuckTales (1987)The New Adventures of Winnie the PoohChip 'n Dale Rescue RangersTaleSpinDarkwing DuckGoof TroopThe Little MermaidRaw ToonageBonkersMarsupilamiAladdinGargoylesThe Shnookums and Meat Funny Cartoon ShowTimon & PumbaaQuack PackMighty Ducks
One Saturday Morning Era: 1996–2002
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Playhouse Disney Era: 1998–2011
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Disney Channel Era: 2003–present
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Jetix Era: 2004–2009 (Jetix Animation Concepts)
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Disney XD Era: 2007/2009–present
Kick Buttowski: Suburban DaredevilMotorcityTron: UprisingRandy Cunningham: 9th Grade NinjaThe 7DPenn Zero: Part-Time HeroPickle and PeanutFuture-Worm!Billy Dilley's Super-Duper Subterranean Summer
Disney Junior Era: 2011–present
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