Not sure why but I had an urge to draw Bunnymund from ROTG. Personally, his design, while good and well thought out, was lacking in the creativity department so I had to give him some proper treatments. I think this new looks emphasize how much he has been through, looking rugged and beaten down but still strong and versatile. Considering that he's the only surviving Pooka, it would make sense that he looks more intimidating and isolated but still gives hope to children, hope he himself lost due to Pitch.