The Best Episodes Written By Mo Willems

The KND learn about evil mustaches taking over the faces.

The Delightful Children once again hold their annual birthday party in the usual sadistic manner planning to eat their cake and not let any of their unwilling guests have so much as a taste.

Numbuh 2 has always been one of the best pilots in the organization but one day while taking his 2X4 aircraft for a spin, he's shot down by a mysterious child pilot with a 2X4 plane of his own. 2 seeks revenge, but the pilot is untouchable, and manages to shoot him down out of every aircraft in the team's arsenal. Considering giving up, piloting, finally finds a way to defeat the pilot only to discover that his supplier has been fooling them both into fighting each other in a plot to destroy every chili dog in town!

Numbuh 4 learns he is to be sent to a boarding school but he isn't worried, as he's always escaped from them before. But then he learns that the school is being run by the evil child Madam Margie, a girl who is getting high-tech aid from none other than her future self! Madam Margie's abominable plan is to create a twisted utopia where girls rule the world, using a demonic weapon called the girlifying ray that can turn anything feminine! The team seeming doesn't stand a chance until they recieve aid from a strange source Numbuh 4's OWN future self!

The evil Chester is developing his Happy Headband a strange device he plans to sell to parents to keep kids out of their hair.

Numbuh 2 has set up a private eye office in the school janitor closet and soon he gets his first case someone is inflicting students with bad cases of pink-eye. When Numbuh 86 becomes the latest victim and he gets no help from Joe the hall monitor (his old partner before he joined the KND) 2 does some of his own deductive work until Joe attacks him.

Numbuh 4's disgust at anything Rainbow Monkey only increases when he finds himself trapped on Rainbow Island.