I don't see much use to his down special besides halting aerial momentum. On the ground he does his Hihachi spin and punches, but the startup step doesn't cover enough distance imo for the uppercut to be useful. When he does the leg sweeps, it is cool, but I don't see it doing enough damage, and since it trips, most of the time the opponent is able to role before Walugi finishes the move, assuming one of the first few sweeps come in contact.
I'd like to see more horizontal movement with his down special-> uppercut, that's for sure. Also, I feel there is too much ending lag for his aerial down special-> air kicks. The attack's hitboxes are very small, the attack doesn't come out very quickly, and it has a good amount of ending lag to leave him open to be punished both during and after the animation.