Science of Mashed Killer Potatoes

Science of Mashed Killer Potatoes is the fifth episode of the first season of Toby and Rochelle: 9th Grade Ninja Twins. It first aired on September 19, 2012.

Synopsis
After triangle-playing band geek Bucky is benched for showboating, he is "stanked" by the Samurai's noxious gas which turns him into a crazy monster creating mayhem at Norrisville High. Randy must learn the secret to saving Bucky, who has fallen under the influence of the evil Samurai's powers, by destroying the one thing Bucky holds most dear.

Plot
In the beginning of the episode, Toby and  Howard bust into the school gymnasium in speedos and full body paint. Instead of being accepted as cool and let into the "Fish Cage" (the cool kids' seating area), they are laughed at and forced to sit on the regular bleachers like everyone else. Though they are disappointed, Rochelle reminds her brother that at least they are not the Marching Band, who get various food items thrown at them. As they show the Marching Band getting food thrown at them as they play their instruments, they see Bucky Hangslinger, the triangle player, crazily dinging his instrument in attempts to look like he's doing a cool solo. Becca Baxter, the flutist girl, reminds him that there are no triangle solos in the songs, and Bucky is reminded of this again when the Band Instructor forces him to sit out of band for the rest of the night. Bucky, who is now very upset, runs out of the gym and cries because he loves playing the triangle and he clearly can't handle punishment.

The Samurai hears the crying Bucky and sounds it as a perfect opportunity to create a Stank monster, the second one we see of the season. He stanks Bucky, who becomes a golden amphibian-like creature and called himself as "Triangle Dinger Doo" (or "T.D.D" for short). T.D.D takes this opportunity in his monster form to crash into the bandroom and revenge on the Band Teacher who told him to sit out. The female ninja comes in and partially saves the day by protecting the Band Teacher and Students. However, T.D.D escapes the premises, still a monster.

While Karen is reading, Rochelle searches for T.D.D for a while before finally consulting the NinjaNomicon for an answer to T.D.D's predicament, all the while trying to entertain Howard's constant pestering about "getting in the Fish Cage."

Once the Nomicon shows him how to destank monsters (destroy what they hold most dear), Toby joins the school band as the replacement triangle player in hopes that that would make Bucky come back to the school to seek revenge. Though Howard strongly disapproved of Randy's decision, Bucky did actually show up in the gym.

Toby and Rochelle turned into the ninjas and fought T.D.D again, finally taking what T.D.D held most dear (in this case the triangle dinger) and cutting it in half with his Ninja Sword. This turns Bucky back into a human again.

After the school's basketball game in the gymnasium was over, Toby, Rochelle and Howard sat in the fish cage and were satisfied with the outcome even though they did not get to sit there during the game. The episode ends with Bucky running away naked from a crowd of laughing kids, since his band clothes were stretched out after being stanked and Randy mention that he shouldn't have seen that.

Major characters

 * Ben Schwartz as Toby Brooks / Red Ninja
 * Heather Arney as Rochelle Brooks / Blue Ninja
 * William Salyers as Howard Cunningham
 * Scott Menville as Bucky Hangslinger / T.D.D
 * Chiwetel Ejiofor as Robin Kang
 * Sombra

Supporting characters

 * Kimberly Brooks as Karen Boonchuy
 * Steve Oedekerk as Bash Johnson
 * Grey Griffin as Miss Wickcracker
 * Jared Kozak as Doug
 * Maria Bamford as Becca Baxter
 * Stevens

Trivia

 * Coming up.

Quotes
Main article: Science of Mashed Killer Potatoes/Transcript