Presari used to be a concubine in Salensus Oll's harem before his death. After rising tension among the Green Martians, she came to Helium to warn that it was tied with the her people, the Yellow Martians of Okar and the other girls from the harem knew what happened. Absolutely fearful of her life, she sought sanctuary with the Warlord of Mars, but she was sadly assassinated while under his protect by unknown forces. Her death was not in vain, for it helped uncover a nefarious plot of Jeddak Talu of Kadabra to mind-control the Tharks and use them to conquer Barsoom.