Weh.

[Filler]

Sorry to add more to this, but I think some reference could help a-lot.

Here's a sprite sheet of Wario dashing from Wario Land 4 (One of my favorite Wario games art design-wise)



Here's yours.



Notice how Wario tends to move different each frame? His facial expressions tend to show some personality to Wario, along with the fact his pose for tackling is different than yours. Yours seems to have his tackling elbow arm stick out too much. They look more like he's sticking his arm out, rather than what looks like him holding towards his stomach.

Wario's arm also has different contrast with each animation frame. Yours has Wario''s elbow just shake around as if it's placed on a new layer, while WL4 has his arm bending around with what looks like recoil.

IMO: Most of your animations move good, but more parts need to be animated. As I really like the walk cycle Wario has while performing a tackle.

I also feel like you're just editing the sprite with each new frame, rather than re-drawing it, which what tends to make sprites look stiff. Well, from my experience.