Dr. Raven Durona was a cryo-revival specialist based on Escobar. He worked for his clone-sister Rowan Durona, who no longer had time to perform very many revivals because of her management duties. Miles Vorkosigan contracted his time to help investigate the shady doings of the WhiteChrys cryocorps on Kibou-daini. He revived the cryo-activist Lisa Sato during the investigation; she described him to her sister as "decorative and functional". Originally from Jackson's Whole, he and his clone-siblings formed a group of medical specialists called the Durona Group.