Mutant Turtles: Chōjin Densetsu Hen

Mutant Turtles: Chōjin Densetsu Hen(Teenage Mutant Ninja Turtles: Legend of the Supermutant) was an original anime video released in Japan. It was created to promote the new TMNT Supermutants and Metal Mutants line of toys in 1996. There were only two episodes.

In the first episode, they went to a shrine built by the Neutrinos. A spirit living there, Crys-Mu, gave them four Mutastones. The Mutastones let them become Super Turtles for 3 minutes. However, Shredder, Bebop, and Rocksteady managed to find the Dark Mutastone which transforms them into Devil Shredder and Supermutants Bebop and Rocksteady. The Turtles were able to defeat them by transforming into a giant robot called the Turtle Saint.

The second episode involves a Saint Seiya-like magic armor that allows the turtles to transform into animals. It also involves a magic mirror that controls the Metal Beasts. The mirror has seven Mutanite Stones corresponding to the sun, moon, and five elements encased in it.

Lyrics to the Theme Song
Mutant Turtles: The Legend of the Super Mutant

Into darkness

Mutant Turtles: The Legend of the Super Mutant

Into darkness

Even if we get consumed by it,

We don't panic.

Courage that knows no limits

And a fighting spirit that surpasses the legends

Overflow in our shells.

Go go Turtles!

With an transformation that amplifies their power

Go go Turtles!

Scatter away the villainous gang

We're turtles

Fighting turtles

We're not sluggish turtles

Punch one and two

Kick that wham-bams

Mutants who were born to defend the peace of Earth

Go go Turtles!

With stunning transformation

Go go Turtles!

Reverse dangerous situations

We're turtles

Fighting turtles

Turtles that shine

When our hearts become one

A miraculous merging is possible