The commander of an evil ninja army called the Foot Clan, Shredder is one of the deadliest martial artists in the world. He is cold, cunning, ruthless, and obsessed with destroying Splinter, whom he blames for the death of his true love.
Shredder’s thirst for revenge has drained him of all compassion, warmth and connection to humanity.
A race of tentacled alien brain-creatures, the Kraang are inter-dimensional invaders. Because Earth’s environment is toxic to them, they are forced to live inside robot host bodies.
They are often given away by their odd speech patterns and failure to understand human customs. They’re inhumanly strong and tough, and with a host of high- tech intergalactic weapons, they are among the Turtles’ most dangerous foes.