The green-suited guy with the beam sword looks great! I really love the colour of the light you've used on him, it looks very shiny. His pose is quite striking too - relaxed but distinctive.
Some of the poses on the little thumbnail drawings are very strong, and I like the colour choices you've made. The bottom-left feeder looks particularly fearsome and mysterious. And the glowy-pastel colours you use have a lot of personality.
I particularly like the blue-grey outlines you've used on the Mischief drawing. She looks very likable but also self-assured. And that big axe would be fun to play with in a game
Awesome stuff! You seem to get a lot of value out of these speed drawings. How long do you usually spend on them?