Randy discovers that his family is moving because Norrisville has become too dangerous, so he decides that he must defeat Cyborg Julian and make his town a safe place to live.

Randy and Howard come across a mysterious ancient idol, a Sorcerer's Ball, while on a field trip to Little Norrisville.

Randy ninjas out to get McFist tossed from the chilliest island resort on Lake LaRusso, and McFist returns to make things incredibly un-chill for Randy.

A legendary defender of school justice rises from the history books when Slimovitz removes cake fries from the Norrisville High menu.

When Principal Slimovitz threatens to split Randy and Howard up unless they improve their grades, the boys try to convince him that an apocalyptic prophecy will come true if he does.

When Randy and Howard get Principal Slimovitz fired, a computer-based program takes his place and traps the students in a simulated world of forced learning.

Ninja and McFist crash land on the most dangerous place in Norrisville, and they are forced to work side by side if they want any hope of escaping the ruthless bots of Scrap City!.

6-year-old Randy tries to convince new kid Howard that Norrisville has a Ninja.

Randy and Howard are forced to go to Saturday school, and Howard discovers that he is a genius on the weekends. Randy uses Howard's new smarts to figure out a way to get them out of going to Saturday school.

Howard's dad Mort thinks Ninja is out to get him, leading to an epic Mort vs. Ninja battle!.

Journalist Debbie Kang scores the scoop of the century when she discovers Randy Cunningham is the Ninja!.

When Randy and Howard's fake "Chuck-a-Cabra" video gives them instant celebrity, it draws the attention of monster hunter Brawn Brickwall who tries to horn in on their glory by noogie-ing the beast.

Ninja learns the dangers of selling out when he endorses every business in Norrisville, including McFist Industries.

Randy's fake sick day creates more trouble than he bargained for after Howard attempts to get his best friend back to school to avoid eating lunch by himself.

Randy purposely leaves the Nomicon at school so Ninja-ing won't ruin his trip with Howard to Snow-klahoma.

Wonk laser tag players Randy and Howard decide to use Ninja-ing to even the playing field.

Randy can't resist tormenting Howard on Halloween by telling the scary story of the terrifying Mudfart and inadvertently brings the maniacal Mudfart back to life.

Randy goes undercover to infiltrate Bash's inner circle so he can discover the secret behind McFist's next Ninja-destroying plan.

Insulted that Howard doesn't think he's a good liar, Randy goes to extreme lengths to prove his friend wrong and puts both of them in grave danger.

When Bucky creates a Ninja theme song that Ninja can't stand, Ninja's attempts to shut it down only makes it more popular.

Randy and Howard are psyched to rock out with pop star Levandar Hart, but they are unaware that Levandar is secretly plotting his revenge for being kicked out of their band.

Howard finds some other friends to hang with, causing a jealous Randy to plot a way to drive a wedge between Howard and his new bros.

Randy and Howard put investigative reporter Debbie Kang on the trail of the Ninja's secret identity.

On the hottest day of the year, Mort Weinerman is finally able to build Randy and Howard's dream pool, thanks to his new promotion he received forbuilding a Ninja that destroys robots for McFist.