During the Cold War era, Karagga the Unyielding possessed a rancor named Bonethrasher. This creature became his personal pet, demonstrating its worth after only seven months of life by killing Karagga's previous pit champion. Following this feat, Bonethrasher became a guardian of Karagga's Palace. When a substantial force arrived to assassinate Karagga, Bonethrasher was the initial defense deployed against them. Ultimately, similar to Karagga's other defenses, Bonethrasher was defeated during the assault.