The Shredder (IDW Comics)

Origin
This version of the Shredder was a human that had died in ancient times and was ressurected by his grand daughter Karai. He's resourceful than most shredders second only to the utrom shredder. He's done a bunch of insanely evil things, subordinates of the foot clan were to have entire family members killed off as they are now members of the foot and should act as the strongest of their bloodline. They are his and should never forget it.

This Shredder not only has enemies with the turtles and splinter but with also the comic version of Krang. Any other competition would involve rival criminals and even the president of the united states himself both of which were killed off by him.

One of the most notable of all achievements for this Shredder is that he defeated master Splinter for the first time without using any dirty tricks and that's pretty hardcore even more so that it was a one on one encounter without his men helping him.

That's not even the worst of it, he turned Leonardo the strongest of the ninja turtles to the darkside.

Personality
The Shredder (Comics) believes only the strongest are fit to rule the continents. He is very cold ruthless and smart thinking as he can outwit the turtles when he comes to making plans especially using love ones like Casey Jones who was held tied up with Shredder holding onto him with a claw ready to stab him. This Shredder doesn't bluff and really does go through with the consequence with not saving their friend and brutally impales one of his clawed blades right into Casey and that plan worked into making Raphael attack him. This was the result of his careful research after realizing how weak and soft the turtles were being attached to people they care for and he really shows how much ruthless he is using against them.

He is willing to let anyone challenge agaisnt him as to show how much he has what it takes to be leader of the foot clan and they usually end up dead or severely punished except for his daughter Karai and currently considers her not ready to succeed him as he skill in fighting is lacking.

Shredder desires to remove every power hold and claim them as his own.