Slave Girl was created by Saga writer Brian K. Vaughan and artist Fiona Staples. Slave Girl's first appearance was in Image Comics' Saga #4.
Slave Girl first appears on Sextillion where she is held as prostitute. The Will soon kills her pimp and attempts to leave with her but is stopped by Mama Sun who owns the girl. She offers The Will to buy out Slave Girl for 650.000 - more then The Will's shop is worth.
Slave Girl next appears in The Will's weird dream that suddenly ends when Slave Girl mumbles weird things and her eyes suddenly become the eyes of a lizard with an eerie look in her face and blood in her mouth. Later, The Will manages to rescue Slave Girl with the help of Gwendolyn and Lying Cat.
On board of The Will's spaceship, Slave Girl appears to be capable of hearing voices of objects. She says Gwendolyn's necklace would be sad and missing its old friends; finally hearing them again, not far away. The old friends appear to be the engagement rings that Gwendolyn gave Marko. Slave Girl then points into the direction of the rings.