Although native to the planet Broi in the Wyllys system of the Milky Way galaxy, the Tsiln who came to be known as Gog was born in the realm of Haizlip and given to a Haizli prince as a pet, while another Tsilin was given to the princess. When the Haizli engaged in civil war, the loyalist populace was evacuated; however, the cargo ship carrying the Tsilin crash-landed on Earth.