TMNT season finale sees the four ninja turtles preparing for alien invasion

Has the Teenage Mutant Ninja Turtles first season really finished so soon? Yes, and it finishes quite well.

This reviewer calls it “funny,” “raucus,” and “righteous.”

In this season finale our four heroes prepare for an alien invasion of Earth.

Teenage Mutant Ninja Turtles: “Showdown” Review – IGN