Serling

Serling is a robot from the year 2105, Serling serves as butler and caretaker to Cody Jones, a role he has held for the entirety of Cody's life, having been more family to him than Darius Dun. Proper and refined (although not without a flair for drama and sarcasm), Serling is quite appalled by the presence of the Ninja Turtles and the chaos they have bought into Cody and his life, although he eventually comes to accept that, like him, they have Cody's best interests at heart.

Although a later model of the robot that eventually became Turtle X, Serling initially possessed none of its battle ability, making him a rather ineffective protector. Despite this handicap, Serling was unhesitant in risking his "life" to save Cody during his captivity inside a berserk Turtle X, and was as a result heavily damaged. Fortunately, Cody managed to repair him and reconfigure him into a new Turtle X armor, which he can now change into at will.