 When their father Robert discovered the Savage Land, word leaked out and he sent Kevin to live there and Parnival to live as a sailor to keep them safe.Believing Kevin had been killed, Parnival established himself as the lord of Castle Plunder as a front for his criminal activities as the Plunderer.Upon learning that his brother had survived in the Savage Land as Ka-Zar, the two clashed on several occasions, mostly over Parnival's obsession with Antarctic vibranium.