Thousands of years ago, the Kherubim destroyed their own planet, according to Titan myth. They then came to Khera and settled it, subjugating the Titans. The Titans would slowly become more or less accepted within the Kherubim society, but remained second-class citizens. When a small group of Kheran and half-Kheran heroes from Earth, known as the WildC.A.T.s, arrived on Khera, they were welcomed as heroes, but they quickly found out that Kheran society had changed over the years. They left the planet, but now the Kherans knew of Earth.