When you don't move it sticks out awkwardly to one side. It doesn't look natural. It doesn't fall straight down like a cape or hair it looks like somebody is holding it up.
l: / The moving hair is cool, but at the moment it looks really bad... like really, really bad. I mean it's still amazing for what it is, but it needs work.
Did you use the one where he kicks him like a blitzball? Fthrow, he should throw the opponent forwards and then throw a blitz ball. HiThrow, he should do that move where he throws a ball in the air and then does a back flip and kicks the ball. That's like his signature attack from FFX. So he throws the opponent into the air and does a back flip kick. LowThrow, :/ no idea.
Down Tilt or Down Smash? For Down Smash if you still need an idea it could still be Hop Step. He could swing his sword and then kick backwards. That way it's an attack that hits both ways.
I thought throwing the blitz ball was forward tilt? And aiming up and down would change how he throws it? That's a really, really good idea. Why don't you do that?