Shredder The Shredder is a Teenage Mutant Ninja Turtles minifigure first released in 2013 . He is the franchise ' s main antagonist . Appearance . The Shredder ' s helmet is metallic silver and has three horns on the top that are connected to a ridge that runs above his eye slot . The bottom of his eye slot has a metal veil that hides his mouth . His head has an angry expression with one of his eyes totally white . Half of his head is heavily scarred and disfigured . The Shredder wears silver , metal pauldrons that have three blades on each side the same pieces are used for weapons by Setam in . He also has a dark blue cape that sits on his pauldrons . Description . 2012 Animated Series . The Shredder , also known as Oroku Saki , is the eternal and main adversary of Splinter and the turtles . He is the undisputed leader of the Foot Clan consisting of Foot Soldier s , Dogpound , and Fishface . He is a master of ninjutsu , surpassing the turtles and being equaled only by Splinter . He is also the adoptive father of Karai , who disagrees with her father and rebels against him , even building up an alliance alongside the turtles . Oroku Saki was born in 1964 in rural Japan as the heir to his father Kaiji ' s place as leader of the Foot Clan , but was orphaned as a baby when his clan was wiped out by the opposing Hamato Clan . However , when the Hamato Clan ' s leader , Hamato Yūta , found Saki in the rubble of what was left of the house of Oroku , he took the boy in to be raised alongside his son , Hamato Yoshi , who he trained with in the same ninja school and became as close as brothers with . However , tensions rose when he and Yoshi both fell in love with the same woman , Tang Shen , which sparked a bitter rivalry between them . Eventually , Tang Shen decided to marry Yoshi , causing Saki to learn of his true heritage through his jealousy and rebel by attacking Yoshi in the house of Hamato , intending to kill him . Unfortunately the blow that was intended missed its mark , consequently killing Tang Shen instead . Yoshi struck back , and the battle turned for the worse . During the fight , they destroyed the house of Hamato , and burning pieces of rubble began to rain down on them , leaving them both badly wounded and permanently scarring Saki ' s face . While walking away , leaving Yoshi in his rage , Saki rescued Yoshi and Shen ' s infant daughter Miwa and secretly took her to be raised in the Foot as his own , renaming her Oroku Karai , leaving Yoshi to believe she was dead as well . Due to the damage they did to both the property and people of the Hamato Clan , Yoshi became known as Splinter , and Saki as " the Shredder " , and were exiled from the clan . Splinter moved to the New York City , and Shredder stayed with the Foot in Japan , eventually rising to become the leader he was destined to be , tutoring numerous disciples such celebrity martial arts star Chris Bradford and Brazilian street thug Xever Montes , and sharing business with several business partners such as Russian arms dealer Ivan Steranko , Italian mob boss Don Vizioso and future Purple Dragon leader Hun . Fifteen years later , the Shredder learned that Splinter had survived their fight , and is training four teenage mutant red - eared slider turtles and teenage civilian April O ' Neil as ninjas of his own . He deployed his army to travel to New York City with intent to kill Splinter . The start of the conflict resulted with Bradford and Montes getting mutated into Dogpound ( later Rahzar ) and Fishface through the alien chemical that were responsible for the mutations of Splinter and the Turtles , called mutagen , and when Shredder learned through Karai about the Kraang , the outer - dimensional alien race that was responsible for bringing the mutagen to Earth needed a set of psychic powers that O ' Neil was born with , he decided to ally with them to get closer to Splinter ' s demise and so they can provide him with an army of robotic ninjas and mutants while having the mutant army perfected by former TCRI inventor Baxter Stockman , who he mutated into Stockman - Fly . Unfortunately for Shredder , Splinter and the Turtles , Karai ended up becoming a rogue member of the mutant army after discovering her actual heritage through Leonardo ' s love for her and trying to face Shredder alone . Shredder later renewed his alliance with the Kraang and helped them invade New York , during which he struck down Leonardo and Leatherhead and faced Splinter , this time achieving victory . He continued to operate in New York during the Kraang occupation and afterwards , and set Stockman to work developing a mind control serum . This would eventually be used on Karai , who was brainwashed into once again believing Shredder was her father ; however , she was eventually freed by Splinter and fled New York . Splinter later approached Shredder for his aid against the Triceratons , only for Shredder to sacrifice Earth to finally kill his hated enemy . However , in an alternate timeline created by the Turtles traveling back in time , Leonardo was able to warn Splinter in time , and he stopped Shredder and defeated him .