Early "Lucky" Concept Sketch
Here's a sketch from one of my notebooks from when I was first trying to come up with a design for Lucky. It took lots of sketches to arrive at the rabbit-gorilla-robot that you know now. I tried tons of different approaches. In one round, I made him look like a grasshopper.
Fun fact: I haven't used pencils for years, even in my notebooks. It's all pen - it's helped me get better at drawing because I can't erase, I have to commit to whatever I put down. Made a huge difference.