[s2e1] The Mutation Situation -

Though they feature more heavily in later episodes, the mutation fallout begins here.

Shredder begins looking for new recruits to bolster his forces, eventually leading to the creation of his own mutant army. Where to Watch [S2E1] The Mutation Situation

You can find full episode details and streaming options on platforms like Nickelodeon or through official episode guides on community sites like The Technodrome Forums. Though they feature more heavily in later episodes,