Metalhead Rewired

Metalhead Rewired is the 11th Episode of the second season and the 37th episode in the series overall. It aired on Febuary 23, 2014.

Official Description
After Donnie upgrades Metalhead's artificial intelligence, he must decide if he can trust a sentient Metalhead.

Characters

 * Leonardo
 * Donatello
 * Raphael
 * Michelangelo
 * Master Splinter
 * Metalhead
 * Slash
 * Kirby O' Neil
 * Dr Rockwell
 * Pigeon Pete
 * Spider Bytez
 * Snakeweed
 * Justin
 * Mutant Wasp
 * Squirrelanoid
 * The Kraang

Trivia

 * Last appearance of Metalhead, Justin, Mutant Wasp and Squirrelanoid.
 * Metalhead Sacririfices himself.
 * Metalhead sounds like R2-D2 when he gets electrocuted by the Kraang computer. Also like Star Wars droid, he had a scomp link which he used to interface with the Kraang computer.
 * Metalhead constantly grabbing Mikey by the face is a gag that relates to Leatherhead grabbing Donnie by the face inIt Came From The Depths and TCRI. And both friends sacrifice themselves for their closest friends.
 * On the back of the Port-a-Potty Portal there's a spray-painted "42!", which in the The Hitchhiker's Guide to the Galaxy is said to be "The Answer to the Ultimate Question of Life, the Universe, and Everything".
 * The vending machine had many odd potato chip flavors: "sesame crab", "scab n' sausage", "chipotle dandruff", "menthol", "aluminum", "mucous & chives", "salt n' sweat", and "milky beef".