If i want to make my own character, and it maybe similar to another in some aspects, like color, proportions, physicals, animal genre, but isn't the same (in example, if i want to make a character some similar to Tails and Klonoa, but isn't Tails nor Klonoa), and i use this character to make my own game with my own copyright, this will generate some copyroght problem? (citing the case of Tails and Klonoa, it are of SEGA and Namco, respectively). I see some people makes similar characters based on Sonic family, but i don't know if i can use it to make my game. I guess the partial drawing style isn't a copyright of SEGA.