Sudosu is a protogen who is trying to rediscover the world after people left it, usually entering in houses to take a rest or to do some things more, almost all the time jist wandering around, but after meeting Kin he knew that he can have someone together on this never ending journey around the empty world. Sudosu's forehead cyan light is the brightest depending on the ambient to illuminate it enough to see. Sudosu is the oposite of a shy person, when he want something he just do it