Sotn is a more than 20 years old game but Maria still, for me, being the best character created ever. If you want to create a 2d/Metroidvãnia game the character is one of your first concerns. It need to be fun to play and not overpowered to get boring. Maria is a type of mix betwen overpower and hability character. New players can enjoy her kit and have a full Metroidvania experience but experient players can push her to a alucinating run play using her power moves and exploring beyond normal players. I can say some Important names of 2d, even not exactly this style like Kid Chameleon with this interesting helmet system, wonder boy lll and Metroid. But Maria is the most complete kit for me and I would like to see her again. So creating 2d games like It, think about what can turn your character a unique experience.