Ch’rell (also known as Torrinon, Kako Naso, Duke Acureds, Oroku Saki, and the Utrom Shredder) is the main antagonist of the 2003 TV series. He was the main Shredder; he has the most history with the Turtles and Splinter. He is called the Utrom Shredder as he is not truly human, but an evil Utrom who uses an Utrom exo-suit (a humanoid vessel). He is a notorious intergalactic war criminal, who has adopted numerous aliases. He is the only known blood-red Utrom (as opposed to the species' normal pink appearance), has a purple scar over his left eye and three horn like protrusions on each side and the center of his head. Ch'rell serves as the main antagonist of the first three seasons of the 2003 TV series and the film Turtles Forever, but as a minor antagonist for the rest of the series.