Sadly, there is no backpedal on the terrible Shredder, but once he accidentally ends up in Dimension X and makes a deal with Krang to open a portal in return for the death of the Turtles, he fades into the background. In order to facilitate this, Krang hands over a container of Ooze so that Shredder can make his own mutants. Baxter Stockman, of TGRI, uses the ooze on a couple of street thugs, and Bebop and Rocksteady are born. Holy hell, how is Out of the Shadows the most faithful TMNT adaptation? Sure, it's not all good news, Tyler Perry is terrible as Baxter Stockman, which is no surprise, and the sub-plot of the ooze turning the turtles human both makes no sense and goes nowhere. Purists may complain about the turtles getting a public debut, but I like the new spin on the story and would be interested to see where it went in any following films.
Stephen Amell is not a good Casey Jones, not holding a candle to Elias Koteas, but the script gives him little to do and fighting off ninjas with a hockey stick and puck makes for a fun scene. The climatic battle on top of the slowly-forming Technodrome with Krang looks like it would make an awesome SuperSystem game, and that Mikey saves the day with a skateboard is pure Turtles gold. Internet nerd culture have panned this because of what Bay did to the Transformers franchise, give it a fair go and you may just find a lot to enjoy. There's also a brilliant version of the old Teenage Mutant Ninja Turtles theme song over the credits that's really hard to find, but is on Google Play and can be found here: https://www.youtube.com/watch?v=SMZjlllTz5I Hey, I said this was the version I would have wanted as a child, embrace it! Turtle power!