Man, after watching those videos posted above, I feel like an absolute scrub. I couldn't find anything this guy did after my experience with him...
I spent about 1 hour playing Haku-Men this weekend in Nor Cal, and here are my notes.
A - Basic standing jab; think Robo-Ky's, without the crazy advantage. You can combo them into each other.
2A - Basic crouching jab.
6A - He leans forward and kinda does a 45 degree angle headbutt. Gatlings into 6B.
j.A - Basic jumping punch.
B - A slightly high angle kick.
2B - Basic low kick. On counter-hit, combos into 3C
6B - A low hitting foot stomp. On counterhit, bounces.
j.B - Basic jumping kick. Doesn't really cross-up well from my experience.
C - Downward angle sword attack. Special cancelable
2C - Think Ky's 2HS. One hit, jump cancelable, special cancelable.
6C - Huge sword swipe. Not cancelable, but does great damage and has lots of active frames.
3C - A low sweep that is very, very fast in comparison to the rest of his attacks.
j.C - Huge downward angle, hits like a brick.
j.2C - Weird sword-hilt attack. Bounces him back, allows him to spice up air combos.
D, j.D, 6D, 2D - All counters. Each of these attacks causes a different effect when used.
6D causes the opponent to twirl around, allowing for a j.C -> 2C style combos.
2D causes Haku-men to ground bounce the opponent behind him.
D causes a generic flip over the shoulder animation.
j.D causes him to perform a backflip, launching the opponent into the air.
His supers have already been described. However, I'll go into a bit more detail on the counter super.
236236D - Can be activated from any type of hit; a projectile, or an actual physical hit. They have different effects depending. If a physical hit touches the shield, everything stops and Haku-men hits instantly, and does around 40% ~ 50% damage on most characters. If a projectile hits, he will go into the animation without the screen freeze. The "hit" is the middle of the screen, and hits over the entire thing. Honestly, I'm not sure if it is unblockable or not; but that is easy to test. :3