Number 4 of the Korean Super Robots from the 70's!!!
Taekwon V's rival mech!
In my version of the story, Mary steals the WIP version of Taekwon X. Dr. Kaff (Mary's father and the mastermind behind the all the evil plans in the story) kidanps Hoon's (that's the name of the pilot of Taekwon V) best sparring friend and use's his ability to do Taekwondo and make this "Taekwon X" operational. Which results in inevitable fight to death between Hoon and his best friend.
I wanted to give a worthy opponent for the story.