According to the manga Mobile Suit Gundam The Origin, young Casval and his sister Artesia escape to Earth shortly after their father's death with the help of family friend Jimba Ral (father of Ramba Ral).
Menurut manga Mobile Suit Gundam: The Origin, Casval muda dan saudara perempuannya, Artesia kabur ke Bumi setelah ayahnya meninggal dunia dengan bantuan sahabat keluarga, Jimba Ral (ayah dari Ramba Ral).