Approximately just 2% of the human population is born with red hair. And life can be tough for them, as they are constantly being called all kinds of names and are the brunt of many jokes. There are even claims that people with red hair are incapable of possessing a soul. That is why many Ginganinjas head to Roodharigendag or Red Hair Day every year to meet up with like-minded, or like-haired, friends. So they can comfort each other.