Shredder is the main villain of the 2014 live-action film and the leader of the Foot Clan. He wears a robotic samurai suit with magnetically retractable blades, which he can shoot against his opponents.
Shredder's real name is not given in the film. He is also shown to have scars on his face like in some other incarnations. However it is not revealed how he got them. Eric Sacks, his second-in-command, is his adopted son and the creator of his armor.
He and Sacks wanted to release poison gas from the roof of Sacks building, and turn around and sell to the government the cure made from the mutagen in the turtles blood, while Shredder will force the remaining people to live under his rule. He was defeated by the combined might of the Turtles and April where he falls to the street below. As the police converge on Shredder, he does manages to crawl to the spilled mutagen sample that fell with him.
In an early, 2012 draft of the script called "The Blue Door", The Shredder was instead a military man known as "Colonel Schrader" and was revealed later on to be a yellow-skinned, red-eyed alien with the ability to sprout spikes.
Originally William Fichtner was going to play Shredder under the name of Eric Sacks.