I think Shredder’s minions might be the most consistent out of all the Ninja Turtles characters. They’re bug-eyed ninjas. Always.
Yeah, the Turtles are always green guys with headbands, but they have varied a lot in size, shape, color, and ocular detailing. Shredder is always a guy with blades stuck to him, but that design has looked a whole lot different every time we’ve seen it. The new Splinter is about as different as that rat has ever looked and they had to go and make him look like a badger to change him any.