Before John Carter's arrival on Mars, she was frequently and cruelly derided by the elder woman Sarkoja, who was responsible for the death of her mother when she was only recently hatched. When the Earthman John Carter arrived on Mars and was taken in by the Tharks, Sola was assigned to instruct him in the ways of Thark. Carter resented her at first, thinking that she was just another captor, but she treated him kindly and soon he became fond of her. When Dejah Thoris was captured by the Tharks, Sola befriended her and helped her and Carter to escape.
Unlike all other Green Martians, Sola is capable of kindness and compassion. John Carter speculates that this is due to having known the love of her parents early in life. She tolerates the cruelty of Sarkoja, who considers her to be a disgusting atavism, a throwback to the weaknesses of human emotions which the Green Martians have largely discarded.
She personally cares for John Carter, sitting watch over him in the night, placing furs on him when the temperature drops. She also tends to his wounds after he fights the white apes.
In Dynamite's Warlord of Mars comic book miniseries, Sola first meets her father after he and another warrior, Tarkas, rescue her and several other green martians from white apes. The future jeddak, then a mere o-mad, prevented Tarkas from killing Sola for cowardice, and as a result, was forced to battle the elder warrior, who was goaded into demanding satisfaction by Sarkoja, his concubine. Tarkas was slain in battle, and thus Tars took his name and his retinue.