Tortoise Mutant

The Tortoise Mutant appeared in 1988 TV series called Kamen Rider Black. The Tortoise Mutant (イワガメ怪人 Iwagame Kaijin) is a tortoise Gorgom monster.

The Tortoise Mutant was used by Gorgom used in order to help manipulate children into treating people the way that they have treated animals and insects through the "Gorgom Mutant Curriculum" by donating pet turtles to each school. Kamen Rider Black had a hard time beating it in the first battle when it kept withdrawing its head into its shell. During the second battle, he discovered that the Tortoise Mutant's eyes are his weak spot which he successfully aimed for. Once the Tortoise Mutant was killed by the Rider Kick, its spell on the kids and teachers was lifted.

The Tortoise Mutant later appears as one of the Phantom Mutants that assists the Dogfish Mutant.

Powers and Abilities
It can withdraw into its shell, tackle while in and/or partially in its shell, and bring out the innate hate within humans.