I'm a massive Cave Story fan, it's actually what inspired my to do pixel art. In turn, pixel art has done quite a bit for me so you can even say it has changed my life! Anyhow, this is a really great illustration. This is in fact probably my all time favorite piece of fan art i've ever seen for Cave Story. Why? Because you took a different approach to the characters and items and general direction. The fact that curly looks like a literal robot robot it a very nice touch to change things up. I also love the way you did King and even his sword, it's all really great. Keep this up!