I love this character concept so much! The silhouette is very distinct, the colors are great, and I particularly love that you figured out how their hat and face will work from multiple angles. And the mushrooms growing up the leg? Chef's kiss!
That being said, I'm going to be a little blunt here. It looks like you specifically designed this character because you can't draw hands and feet. That may not be the case, but that's what I'm getting. Judging by your action shots, it looks like your character doesn't have arms and can manifest spirit arms? That's cool and I can totally be into that. But also not having any feet? It feels like you just don't want to draw feet. I can't see how this character can walk on those tiny little points at the end of their legs, and the rest of the style isn't cartoonishly-exaggerated enough for me to believe it's just part of the style. It feels very unbalanced and wrong for the character. Giving them feet would instantly make them more grounded and believable as a person instead of a 2D design.
Overall though, I think it's honestly a very cool concept, and I'd be very excited to see a comic with a character like this!