what was the splinter backstory in this movie? It changes throughout the previous comics/TV shows/movies. Sometimes he's Hamato Yoshi's rat - sometimes he IS a mutated Hamato Yoshi.
As far as I know, the "mutated Hamato Yoshi" origin was created by the 1990s animated series and has only ever been used there and in the current CGI series.
And really, it never made sense to me in the original cartoon. The premise there was that the mutagen transformed anything into a hybrid of its original species and whatever it had most recently touched. So the turtles, touched by Hamato, turned into humanoid turtles. But then, that also means that Hamato was touching turtles, not rats, at the time of his mutagen exposure -- so why didn't he turn into another turtle-humanoid instead of a rat-humanoid? It doesn't add up.
Although I agree that the comics/movie origin of Splinter just being an ordinary rat that learned ninjutsu by observation was kind of weird.
And I know it may not be a commercial success, but I want to see the DARK story of the turtles like the original comics. Not so kid friendly at all.
You mean the one where they were mutated by the same canister of radioactive waste that blinded Matt Murdock?