I really dig this brush/style. It's reminiscent of pixel art, but definitely something different. I like what you did with the pose and colours. It's a very dynamic look and there's enough variation in the colouring to keep things fresh, yet everything is similar enough to maintain consistency. It all works really well together.
I like what I've seen of your character designs, you have fun outfit and colour choices. Is there a story behind these particular characters?