Thanks for the replies, people. Glad you're all enjoying the character concept.
Ok, now I know what some of you are saying about her run not looking "ninja-like". The idea is that she's not really suppose to look like she's running. It's more of a jog. Like, I was originally going to have her just walk, but felt that wouldn't work. And doing that high-speed ninja run you all are suggesting just looks too fast for me. I don't want her blazing across the screen. A jogging pace is much more preferable to me.
And about the sword slashes looking weird, I suppose it's the part when she withdraws her sword that looks awkward. Should I make the flash of the blade when withdrawing invisible?
Oh, and I hear ya on the springiness effect on her jumps, Faceless, but that would require adding an additional frame, and I kinda want to keep the animation of all the sprites rather simple.
I would have otherwise made eight to ten frames for everything such as attacks and movement as I normally do.
Oh, and I noticed what you mean about the leg, Woverine. I'll have that fixed.