Season 1 (2017)
EPISODES
1. Lab Friends... Forever?
When Billy Dilley's science fair project the Cheeserator gets struck by lightning and goes haywire, Billy, his lab partners Zeke and Marsha, and his pet rat Anaximander, find themselves stuck in a strange underground land called Subterranea-Tania.
2. Surviving Billy
On their second day in Subterranea-Tania, Billy, Zeke, and Marsha find their way back to the Cheeserator after getting kidnapped by a vicious Pterosaur. After getting back to the Cheeserator, the trio builds a house made out of extra parts for safety.
3. Calzones
Zeke, the King of Calzones, must defend his title when a rival chef enters the picture.
4. Crab Hands
Billy invents the grafting machine and adds creature parts to his body.
5. The Date
Billy and Zeke help Marsha find romance, but an unexpected guest could ruin everything.
6. The Troggies Next Door
Billy and Zeke have an epic sports showdown with the neighbouring Troggies.
7. The Mushroom Prince
Billy repeatedly tries to steal Marsha's diary. Billy is excited to meet Count Wretcher, an eccentric neighbour and fellow inventor.
8. Count Wretcher
Billy strikes up a friendship with the sludge-obsessed Count Wretcher, who offers to help fix the Cheeserator for his own nefarious plans.
9. Hey Judy
Billy meets a new friend and a new romantic interest on the same day and is forced to choose between the two.
10. Welcome to the Hag House
When Billy becomes the new apprentice to Subterranea-Tania's resident sorceress Hag Witch, the two concoct a love potion to try on Count Wretcher.
11. Beastie Billy
Billy takes extreme measures when Marsha convinces him he has brought a curse upon himself.
12. Zartran
Billy invites a heroic warrior named Zartran to stay at his house.
13. "K" is for Klutz
Billy and Zeke try to figure out Marsha's unexplained bout of klutziness.
14. Tommy X
Zeke is blown away when he meets his favorite extreme sports hero, Tommy X.
15. Billy/Willie
Zartran convinces Billy to pretend to be the nephew of an old lady to scam her out of her secret treasure.
16. The Telltale Wart
Billy is jealous of his new friend's wart.
17. Ol' MacBilly
Teased by a gang of lizard youths for his hair, Billy decides to save up for a wig by looking after Big Doug's prized mammoth.
18. Silly Spheres
Billy, Tony and Yucky guard Hag Witch's house while she's out, but they can't resist breaking into her spells cabinet.
19. Wretcherous Treachery
Tired of being castle-bound by his domineering mother, Count Wretcher breaks loose and tries to convince Billy and friends to continue fixing the Cheeserator.
20. Jared
Billy grows jealous when Zeke and Marsha befriend a strange creature called Jared, who eventually turns out to be a hideous flesh-eater who suffered from amnesia.
21. Sluggy
Feeling ignored by Anaximander, Billy decides to take in a new pet, a slug called Sluggy.
22. Double Bubble
When Zeke starts avoiding his chores by throwing his trash on the roof, he and Billy end up dealing with a large-scale garbage problem on their hands.
23. The Glorp of the Gorks
When the Gorks' sacred slime is tampered with, Billy is enlisted to help find the culprit.
24. Rat's Entertainment!
When Anaximander starts molting his fur, the people of Subterranea-Tania decide to put on a show to make him feel better.
25. The Battle for Subterranea-Tania
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.
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