Billy Dilley's Super-Duper Subterranean Summer is an upcoming Disney XD series scheduled to premiere June 3rd, 2017. It is created and executive produced by Aaron Springer (Gravity Falls, Disney Mickey Mouse). On January 5, 2017, Springer announced that the series will premiere this spring, but later in this summer
The series is centered on Billy Dilley, a seventh grader with a love of science. He spends the summer vacation inside his lab with his friends Marsha and Zeke, and they later found themselves in a strange world under the surface of Earth.
- Aaron Springer as Billy
- Tom Kenny as Zeke
- Catie Wayne as Marsha
- James Arnold Taylor as Count Wretcher