Cain was the first child of Adam and Eve, and the first human to be born. His brothers were Abel, and later Seth and two other sisters.
History[]
Cain was the first murderer, having killed Abel out of anger that the Creator accepted Abel's offering instead of his. For his crime, he was cursed and banished to the east, where he took a wife from possibly one of Adam's daughters.
He was the presumable founder of the Cainite civilization and race, a world-spanning industrial empire that spread with their cities.
Cain is only seen in flashbacks, beating Abel to death with a stone. With the murder of Abel, he and his descendants became more violent and warlike.