Season 6

On Halloween eve in the foggy town of Bubbledon, everyone is nervous because there's a werewolf on the loose; monster detectives Molly, Gil, and Dr. Pupson are on the case and try to find the critter before Halloween is canceled.

It's lighthouse keeper Deema's birthday, but when a monster named Fogzilla keeps blowing out her lighthouse, she needs to figure out how to get Capt. Molly's ship, carrying her birthday cake to shore, or there won't be a party.

On the hottest day of the year, Rangers Goby and Gil's job is to make sure pedestrians reach the lake safely; however, Bigfoot causes issues when he removes the stop signs from the park.

On the U.S.S. Recycler, Captain Deema and her crew strive to leave every planet cleaner than they found it. However, their mission is put to the test when a crew of messy Litterbugs, led by the evil Garbage Khan, take over their ship.

Holiday Cooks Molly and Gil, on a mission to save the town's Harvest Day (Thanksgiving) feast, must retrieve a Golden Tomato from magical Tall Tale Farms; but first, their food knowledge is tested by three guardians.

On a quest to attend King Grouper's Christmas party and deliver a promised tree, Lady Oona and Lord Goby must face the ravages of winter and a mysterious Freezy Dragon, who seems intent on keeping them from the festivities.

In Holiday Land, there's a town for every holiday until Pirate Myra uses Wizard Grouper's magic wand to turn every town into Pirate Town; it's up to Molly and Gil to restore Holiday Land back to normal.

When small-town "puppy-saurus" Bubble Puppy gets picked to go against the reigning champ Boom Boom T-Rex in the Tough Roarier competition, it's a battle of strength, speed and, above all, heart.

Gil and Bubble Puppy are competing in the Winter Sports Chompetition, a competition for athletes and their dogs; they hope to stop reigning champs Coldsnap and his dog Mr. Husky from cheating to win the gold.

Capt. Deemo and first mate Gil pilot their steampunk sub to different ocean habitats so they can deliver Friendship Day bubblegrams to all their friends; along the way, they find themselves being chased by a kraken.

Police Officers Molly and Gil are tracking some mysterious lights that have been popping up around town; with the help of several nocturnal animal friends, they discover the lights aren't aliens but anglerfish.

Robot Mechanic Molly and Robo Puppy must stop a bossy cyborg named the Glitch when it hacks all of the robots in Robotopolis and forces them to dance "The Robot."

Ice cream sellers Molly and Gil are trying to deliver ice cream to a waterpark on the other side of a hot desert. Will they get the ice cream across the desert, unmelted, before the Rattlers catch them?

Skipper Molly and First Mate Gil are shipwrecked on Volcano Island, and it's about to erupt. When parts of their boat start to mysteriously disappear, will they be able to make it off the island in time?

Ninjas Zooli and Oona are excited for their first mission: escorting snow monkey Moshi up Mt. Danger to join his troop. But it won't be easy: a storm looms, and mischievous Moshi is causing trouble. Will they complete their mission?

Zooli and her crew of Marine Biologists escort their new friends Baby Shark and his pilot fish William to visit Baby Shark's great-great-great-great-great Uncle Slow Mo, and help them escape the determined fisherman who's chasing them.

When chefs Molly and Gil bring their tasty food truck to Bland Land, they discover that Baron von Bland only lets his subjects eat Bland Bread. Yuck!

All is not well in the normally well-rested Kingdom of Sleepwell. Princess Deema can't fall asleep. Her Royal Court comes to her aid, but when even magic doesn't work, she learns that all she needed to do was follow her bedtime routine.

On the Shimmy-Shimmy Islands, everyone's preparing for Queen Zooli's Dance Party. But each time they practice their songs, they're splashed by a huge wave. Will they figure out who's causing the waves before the party is canceled?

In Ancient Greece, Paramedics Zooli and Gil get a call for help from Nonny, so they race to him in their flying chariot ambulance. Along the way, they're pursued by a giant Cyclops. Will they reach Nonny before the Cyclops catches them?

When Primatologists Zooli and Gil search the rain forest for a Silverback Gorilla, they're chased into an ancient temple by a robotic Silverback - who turns out to just be a tiny marmoset guarding a sanctuary of mountain gorillas.

In the Gourmet Galaxy, everyone loves yummy food. But when General Yuck turns everything icky, only a recipe for delicious Moon Muffins can stop her. Master Chef Goby and his apprentice Deema must bake those muffins and save the galaxy.

When Oona's Bubble Kitty goes missing aboard the Guppy Express, sly Detective Nonny steps in to help. Knowing the cat must still be on board, they race to find her before the train reaches its next stop--and the kitty may be lost for good.

When super villain Felina Meow starts turning all the dogs at the annual Dog Show into cats, it's up to superheroes Puppy Girl and Super Pup to stop her. Will they foil her cat-astrophic plan before she turns everyone's pups into kitties?

In the Fastest Feather Race, it's Team Flightless versus cocky Amelia the Peregrine Falcon. Though Penguin Nonny, Ostrich Oona, and Kiwi Goby can't fly, these birds of a feather flock together. Will teamwork be enough to win the trophy?

When giant robot Buster steals all the batteries that power Solar City, which runs on the sun's energy, it's up to Solar Power Workers Nonny and Goby to stop him and get the lights back on before the big light show is canceled.

Jesters Goby and Gil arrive in the Kingdom of NeverLaugh, where King Grumpfish declares that he'll outlaw laughter forever if no one can make him laugh before sundown. Will the Jesters be able to crack him up before it's too late?

When reckless hyena Spotty steals young elephant Eli from the savanna, Wildlife Rangers Zooli and Goby hop into their big rig to rescue him. But when the big rig chase lands Spotty and Eli in danger, it's up to the Guppies to save the day.

When supervillain Dr. Coldfinger takes Curly Q's newest invention, the Ultra Spy Tool, Secret Agents Molly, Goby and Spy Pup must travel across the world to find and infiltrate his North Pole lair.

The Guppies excitedly wonder what kind of animal Zooli is adopting for a pet. They know she likes almost all furry, feathery, and scaly creatures, so guessing what she'll pick can be difficult.

Everyone in the Old West town of Harmony Valley loves playing music together. When noisy Billy Joe Strumlouder rides into town to sabotage their tunes, Sheriff Zooli must save the day.

When a Gargoyle steals all the gifts and decorations for Countess Zooli's surprise birthday party, the French villagers call in the Three Guppeteers (played by Molly, Deema and Oona) to save the day.

Everything is fast in Zippy City, from the trolley to the mail. But Tiny the Slug and the Opposite Crew slow everything down to the opposite.

Bayou Chicken Farmers Deema and Goby discover an unusual egg on their farm one morning, and set off on a bayou river adventure to find the egg's mama.