Karateloid

The Karateloid appeared in 2012 TV series called Tokumei Sentai Go-Busters. The Karateloid (カラテロイド, Karateroido) is a Messianic Metaloid that is created when Messiah Card 03 infects a karate fist guard. It is sent to investigate human instincts to report back to the rebuilt Messiah. Its left leg has the power of Messiah in it, enabling it to move its leg faster than can be seen by the naked eye. It seeks out the child Kenta for its studies on instincts.

Super Hero Taisen Z
Karateloid was part of an army of resurrected (mostly Super Sentai) monsters led by Space Raider after the revival of Madou Demon King Psycho. They proceeded to attack the gathering of Kamen Riders and Super Sentai, giving them a hard time. The heroes of recent years were in a pinch until the arrival of a force of Sentai and Rider reinforcements led by Akarenger and Kamen Rider Ichigo. The combined forces of superheroes were able to turn the tide against the Madou army. They lined up and used their various finisher attacks to destroy the revived monsters.