Billy Dilley’s Super-Duper Subterranean Summer
Season 1, Episode 25: The Battle for Subterranea-Tania
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As Billy, Zeke and Marsha prepare to leave Subterranea-Tania by throwing a "farewell party", Billy accidentally causes a robot-alien invasion led by an evil clone of Billy. The people of Subterranea-Tania then turn against Billy and it's up to the trio to try to stop the invasion once and for all.
All Episodes - Season 1
Episode 1
Lab Friends... Forever?
Episode 2
Surviving Billy
Episode 3
Calzones
Episode 4
Crab Hands
Episode 5
The Date
Episode 6
The Troggies Next Door
Episode 7
The Mushroom Prince
Episode 8
Count Wretcher
Episode 9
Hey Judy
Episode 10
Welcome to the Hag House
Episode 11
Beastie Billy
Episode 12
Zartran
Episode 13
"K" is for Klutz
Episode 14
Tommy X
Episode 15
Billy/Willie
Episode 16
The Telltale Wart
Episode 17
Ol' MacBilly
Episode 18
Silly Spheres
Episode 19
Wretcherous Treachery
Episode 20
Jared
Episode 21
Sluggy
Episode 22
Double Bubble
Episode 23
The Glorp of the Gorks
Episode 24
Rat's Entertainment!
Episode 25
The Battle for Subterranea-Tania