Cobra Mutant

The Cobra Mutant appeared in 1988 TV series called Kamen Rider Black. The Cobra Mutant (コブラ怪人 Kobura Kaijin) is a cobra Gorgom monster.

This monster appeared in the form of a samurai that came out of the portal caused by a time-traveling device. After a brief fight with it in its samurai form, Kohtaro transformed into Kamen Rider Black. The Cobra Mutant escaped into the time stream to pursue two samurai. The Cobra Mutant caused them to use the machine to alter people and stop time. Kohtaro followed them into the time stream and ended up on the face of a giant clock where a boy named Mamoru was being held. The Cobra Mutant attacked Kohtaro who then ended up hanging from the side of the clock. The two samurai arrived and ended up helping Mamoru.

When Cobra Mutant started to attack them, Kohtaro transformed into Kamen Rider Black who kept the Cobra Mutant occupied. When the samurai freed Mamoru, Kamen Rider Black used the broken big hand of the clock to chop off the Cobra Mutant's tail and stab it.

Once Kamen Rider Black killed the Cobra Mutant with the Rider Kick, the device was destroyed and time was set back to the way it was.

Powers and Abilities
It can extend its tail to constrict and can travel through time.