The Peloran of the Jack of Harts universe are modeled after the Aneerin of my childhood. Old and wise and strong. Immortal defenders. Genetically engineered supersoldiers as I fleshed them out. They actually can die, but old age or disease is never their killer. Their bodies can regrow anything they lose as long as they aren’t killed dead, and that usually takes stopping their heart and mind and otherwise absolutely devastating their core bodily functions. And with mind backups and cloning chambers, even if you do manage to kill them all the way, they always come back. I wanted a relentless force for good in the universe of Jack, and I designed the Peloran to fit that archetype.