Billy Dilley's Super-Duper Subterranean Summer is an American animated television series created by Aaron Springer.

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 (Catherine Wayne), and his pet rat, Anaximander, who on summer vacation find themselves trapped in Subterranea-Tania, a strange world located in the Earth's core after a test ride in Billy's science fair project The Cheeserator, a giant drilling machine designed for cutting holes in enormous Swiss cheese, goes horribly wrong.

Zeke tries to impress his extreme sports hero Tommy X when he pays a visit to Subterranea-Tania, but he seems to hang out with Billy more.

[11] In March 2016, it was confirmed that Disney XD has greenlit the show for a full series along with Big City Greens.

All episodes from Billy Dilley's Super-Duper Subterranean Summer are available on Google play,[16] AppleTV,[17] Prime Video, iTunes Store and Disney+[18] Emily Ashby of Common Sense Media gave the series 3 out of 5 stars; saying "This new world of Billy's appeals to kids' sense of imagination, even if it does so with more nonsense than anything else.