Kraid as he appears in Super Metroid.
Kraid has always been one of my favorite bosses. I really liked the idea of him firing spikes from his belly, I thought it was a really cool and weird concept. That's what I really like about the bosses from Metroid, they always have at least one feature about them that make them very unique.
This guy took quite a long time to draw, shading and highlighting each individual scale was pretty time consuming but I think it turned out pretty well.