1. Sinister Romance

2. Flushed Away

Someone's filling the sewers with alligators, which are making their way to people's toilets.

3. Episode 3

4. Sloppy Joe to Go

Sloppy Joe opens a fast-food joint with portions so big that half the food is thrown away, creating a garbage overload in the city.

5. Hairless Whispers

The Grossologists tangle with a former hair stylist who has a space satellite that could make everyone in the world go bald.

6. Stinko

Sloppy Joe creates a body-odor epidemic during a heat wave.

7. Mold Monster

Roger Pinkeye uses smelly cheese to create a monster out of mold.

8. When Allergies Attack

Lance Boil drops an allergy bomb at a carnival.

9. Pussed Off

A major case of acne spreads through Ringworm High.

10. Episode 10

11. Episode 11

12. Spa Insectiva

An exclusive spa opens and customers are raving about its fancy bath products, but they're all bug-based and created by Insectiva, the insect queen.

13. Ain't Over Till the Fat Man Sings

A disgraced opera star is set on revenge and plans to blow everyone away with destructive burps.

14. Candy Isn't Dandy

A candy man comes to town with treats that cause bad breath.

15. Swamp Gas

A mechanical swamp monster is causing power outages all over the city.

16. Episode 16

17. Let Them Eat Fruitcake

Abby notices that holiday cheer is lacking during the Christmas season, especially with Sloppy Joe playing the local Santa.

18. New Recruits

Ty and Abby recall their early days as Grossologists.

19. Pinkeye & the Brain

Roger Pinkeye kidnaps Lance Boil, hoping to use him to get all the Grossology secrets.

20. Episode 20

21. Episode 21

22. Fangs a Lot

Little pet snakes are sold all over town before they morph into deadly beasts.

23. Hirsute Yourself

Frederick Follicle returns to town, bringing a hairy epidemic with him.

24. Pucker Up

Insectiva and Sloppy Joe are determined to ruin Valentine's Day.

25. The Fart Side of the Moon

Fartor returns with an explosive plan to send a gassy meteor on a collision course with Earth.

26. Night of the Living Roadkill

Darko Crevasse returns with an army of zombie roadkill animals, and he's on a mission to ruin Halloween.