Teinimutanttininjakilpikonnat 2: Mönjän salaisuus was released in the year 1991。Teinimutanttininjakilpikonnat 2: Mönjän salaisuus is also called as Teenage Mutant Ninja Turtles II: The Secret of the Ooze, Teenage mutant ninja turtles II - het geheim van het drab, Teenage Mutant Ninja Turtles 2, Tartarughe ninja II: il segreto di Ooze, Tartarugas Ninja II: O Segredo da Lama Verde, Tartarugas Ninja II - O Segredo do Ooze。

The turtles find out where the Ooze, the substance which made them mutate, came from. Unfortunately Shredder learns about it too, and uses it to enhance himself. So the turtles have to prove again who's the better ninja fighter.

Teinimutanttininjakilpikonnat 2: Mönjän salaisuus actors and actresses include Ernie Reyes Jr., Mark Doerr, Paige Turco。