Insectiva tries to destroy the city using giant, mutated termites.

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A boy causes organic things to rot just by touching them, so Abby and Ty try to cure him.

Lance Boil shrinks himself and tricks Ty into drinking him so he can tinker with Ty's brain once inside his body.

Instectiva, Lance Boil and Sloppy Joe inflict the members of the Bureau of Grossology with parasites, halitosis and acne in an effort to take over the city.

While defusing a device Lance Boil planted in town, Abby gets hit by a ray that instantly starts aging her at 6000 times the normal rate.

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A mad proctologist, Dr. Colon, breeds a giant intestine that he intends to snake around the world, unless Ty, Abby, Paige and Naomi can stop him.

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We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

Sloppy Joe creates a friend out of stolen boogers.

Abby is kidnapped and placed in a greenhouse filled with man-eating plants.

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We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

An attack on the city's water system makes people sick.

Ty and Lab Rat design a vehicle that crawls and leaps like an insect, and then are challenged to a race by Insectiva.

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We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

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

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

Lance Boil drops an allergy bomb at a carnival.

A major case of acne spreads through Ringworm High.

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

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We don't have an overview translated in English. Help us expand our database by adding one.

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

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

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

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

Ty and Abby recall their early days as Grossologists.

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.

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

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

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We don't have an overview translated in English. Help us expand our database by adding one.

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

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

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

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

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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.

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