Like in the animated 2012 TV show on Nick, TMNT, The Triceratons shall debut in the upcoming film TMNT 3 as the main villain(s) in the form of an empire. Their leader the true main antagonist of TMNT 3 President Zamaron shall stop at nothing to take out The Turtles and their world with them. Of course, differing from the anticipated 3rd installment in the TMNT film franchise, Zamaron is the emperor of the Triceraton Empire not the president in the late 4th season of Teenage Mutant Ninja Turtles. There is no doubt that these dinosaur based alien creatures will have their own domed coned spaceships hovering over the earth in TMNT 3.
TMNT 2 shreds into theaters summer 2016 whereas The Triceratons threaten humanity in TMNT 3; in theaters summer 2018.