 Towards the end of the film, several items are shown that reference  the live action movies. These include: Shredders helmet and staff,  A Foot Ninja Mask, the canister of ooze that mutated the turtles and  Splinter (labeled TCRI instead of TGRI, though a crack is  strategically placed to work either way), the Time Scepter, Walkers  hat, and pieces of the battle suits of armor worn by the Turtles in  the third film.