O Ilusionista
Captain 100K
I second that. Smack Studio is a powerful tool that can even rotate 2D sprites in 3D world, take a look:Great job on these hand-drawn sprites, your distinctive style is definitely recognizable.
If I had one major point to nitpick, it would be the character animations, which are a bit stiff, especially around the torso.
Perhaps you could use Rotsprite, separate the body into segments that you can rotate, and give them a bit more mobility
(using the method of a Smack Studio with body parts) :
Great job on your work on this series, the result is really nice.