I should probably mention it now, since it's going to see some use
Alka has been through the breakdown of the world for 6 years now. He's been inside Typhon for 4 years. During on of his years outside Typhon, a master of martial arts (who may or may not be a part of Kata's clan) trained him in many fighting styles. He also taught him, "The Mach" technique. It basically puts extreme pressure on the users body, but allows them to travel at mach speed. It comes in levels, each being a multiplication of mach speed (btw, mach speed = speed of sound). There are also time limits on how long he can use each form.
Mach 1 = 5 minutes
Mach 2 = 4 minutes
Mach 3 = 2 minutes
Mach 4 = Half a minute
Mach 5 (his physical limit) = One movement [or a punch for example]
After Mach 4 and onwards, his movements will cause ripples to fly through the air. They can't kill in mach 4, but do a great deal of damage. After mach 5 however, he causes an actual explosion, both sending a ripple capable of insta-kill and blowing off the body part he used. For the sake of limiting OPness, I'll say he can only use Mach 5 once in the RP before he dies
Also, the transformation is instant and unnoticeable, besides a dramatic increase in his speed