Billy Dilley's Super-Duper Subterranean Summer

Did You Know?

• The series was originally greenlit for 20 episodes but was cut down during production.
• All episodes are available on Google Play, Apple TV, Prime Video, iTunes Store, and Disney+.
• Emily Ashby of Common Sense Media gave the series 3 out of 5 stars.

Characters

Billy Dilley, voiced by Aaron Springer, is a 12-year-old science enthusiast who is curious and willing to explore the creatures of Subterranea-Tania. He is described as silly, weird, trouble-prone, and optimistic. Zeke, voiced by Tom Kenny, is a long-haired slacker assigned to work with Billy; he tries to appear cool but is emotional and often makes sarcastic remarks, and is a talented chef. Marsha, voiced by Boxxy, is a wannabe social butterfly and budding journalist who is impressionable and lively. Anaximander is Billy's silent pet rat. Judy, voiced by Sarah-Nicole Robles, is a female swamp monster who becomes Billy's love interest. Count Raymond Wretcher, voiced by James Arnold Taylor, is a green-skinned tyrant who pretends to be friendly to steal the Cheeserator. Mrs. Wretcher, voiced by Kerri Kenney-Silver, is Count Wretcher's overbearing mother who appears only as a portrait with a speaker. Big Doug, voiced by Brian Doyle-Murray, is a mammoth farmer who owns a wig business. Hag Witch, voiced by Susanne Blakeslee, has a crush on Count Wretcher and takes Billy as her apprentice. The Troggies are primitive gorilla-like creatures; Yucky, voiced by Richard Steven Horvitz, is a young Troggie friend of Billy who speaks only his own name. Tony, voiced by Kenny Pittenger, is a talking snail and former apprentice to the Hag Witch. The Gorks are lizard men who hate surface-dwellers; their leader Gorkager, voiced by Brian Posehn, is intelligent but aggressive.

Production

The show was first announced in 2014 as a potential pilot. In March 2016, Disney XD confirmed it had greenlit the series along with Country Club. Merriwether Williams was confirmed as a writer in 2015, and character designer Robertryan Cory had been working on the series since December 2014. Jessica McKenna was originally chosen to voice Billy Dilley, but creator Aaron Springer was ultimately cast in the role.