A Suicide King is a person who has inherited wild card genes from both parents, in much the same way as blood type, hair colour and texture, eye colour, and other physical traits. A person with such genes is likely to express the wild card when reaching puberty. Stress usually causes the transformation, and since 90% of those infected die, people who have the genes are said to be "Suicide Kings". Causing undue mental distress to a Suicide King is punishable by law, as it could cause the virus to express itself.