The Troop is in lockdown until they can figure out which one of them is really a monster.

Haley becomes suspicious when a mousy classmate suddenly gains status and power - which is revealed to be by controlling an invisible, subservient monster.

Jake learns the value of teamwork. Meanwhile, Hayley finds out that it's not possible to be liked by everyone.

On Halloween night, The Troop has to capture the monsters after the security system breaks down and the monsters escape.

Jake meets his monster-hunting hero, but discovers he's out growing the ability to hunt and capture the ultimate monster he has been chasing his whole career.

A Troop from Japan arrives to share monster-hunting techniques with our Troop, but cultural differences complicate everyone's attempts at defeating the elusive Noctem.

Jake and Hayley discover that the hot Christmas toy, the "Ickie Doll", has been invaded by a Vapor Monster, turning the dolls into nasty, violent, living creatures.

A strange Swarm monster causes everyone in town to behave perfectly, The Troop learns that perfection is overrated.

Jake and Haley must pretend to be a couple in order to catch the Eris Fairy(Victoria Justice) that's been running around the school breaking up couples in love. Felix works furiously to trap the Eris Fairy only to realize how much he relates to her situation. In the end, the fairy apologizes to Felix and tells him that she likes him.

While hunting a Vampire Moth, the Troop must alleviate the suspicions of two of their classmates who witnessed a monster fight, but cannot be Snarked.

Gus is back from the mental hospital and he plans on destroying The Troop and taking over Lakewood. But in order to do he kidnaps Mr. Stockley, to enter headquarters and release all the captive monsters.

Everyone thinks Felix is a crime stopper. Meanwhile, Candace and Hayley start to become friends.

While fighting a gelatinous cube monster, Haley and Jake accidently switch bodies.

When a veteran Troop member named Bianca Stonehouse replaces Mr. Stockley due to his dentist appointment, The Troop discover that she is a monster in disguise, there to help another monster escape and to find the real Bianca Stonehouse before its too late.

Felix's new friendship with Gus creates a rift within The Troop. Little does anyone know of Gus's secret plans to destroy The Troop.

Felix creates a robotic version of himself that is better at his life than he is, but evil. Hayley is bitten by a monster which gives her symptoms that make her seem very nerdy.

The troop has its long awaited return and it is full of surprises!!! Jake decides to ask out Hayley but has a tough time especially since she is dealing with the new girl, who is a bad chick. Meanwhile, Felix tours a special school.

Jake, Hayley and Mr. Stockley get a distress call from another Troop team during driver's ed training. Jake and Hayley kiss. Meanwhile Kirby runs for Green Czar and Cadence helps him win against Mazie (Ashley Argota).

A tree monster takes the form of a student in order to kill the student council. Also, Felix is forced into a situation where he must protect a boy that has wronged him in the past.

When a group of part vampire/ part Hamster/ part Human monsters invade Lakewood, Jake must go undercover to infiltrate the group in order to find their lair.

Cadence sees an opportunity to prove her worth when The Troop is attacked by an ice monster.

Candace is attacked by a monster that sucks people into mirrors. So Hayley and Kirby must stop it before it attacks anyone else. Meanwhile, Jake tries to get his comic approved by Stanley Lee.

Kirby enters the science fair and so does his rival from hos old troop who uses a monster for her project which is a robot that attacks the school. Meanwhile, Jake and Hayley battle for concert tickets.

Cadence and her friends accidentally release a deactivated Doom Hound.

Cecilia, an Eris Fairy sister (Daniella Monet) arrives and mistakens Etienne for Felix and they become a couple. Cecilia's ex-boyfriend, Tod comes from the monster world to get her back and get rid of Etienne. Meanwhile, Jake wants to ask Hayley go to the dance with him.