About me: Zen is artificial superhuman that took up the name keign as his middle name in respects to a close friend that he considers family though they are not blood related, he only knows of this friend through small rumors that have traveled across the world. During his prime he grew up spending most his life in primarily in the hospital of a old mountain city.
However undergoing experimental projects resulted in his body changing so he took the name hitokami as symbol of that change. As it is a pun on the abilities he gained.
Meaning fire mountain king.
This granted him a quirk known "magma wall" which controls both heat and earth. And buffed his physical strength. However as result of this he can take large amounts electricity and but at the risk of over tasking his body. Causing critical damage.