Casca is a former unit commander of the Band of the Falcon and an estranged companion of Guts. Originally a callow peasant girl living in a remote mountain village,[8] she develops into a well-attuned warrior upon joining the Band of the Falcon and aids greatly in the group's storied successes during the Hundred-Year War. Following Guts' departure and Griffith's subsequent imprisonment, she is forced to assume the position as the band's leader,[9] succeeding in preventing the complete annihilation of the Band of the Falcon and rescuing Griffith from the Tower of Rebirth.[10] Crippled from his horrifying year-long torture and demoralized by his fall from grace, Griffith ultimately invokes the Eclipse, in which he is reborn as the fifth God Hand member Femto and rapes Casca to spite Guts.[11] Having physically survived the ordeal, she regresses into an infantile and largely mute amnesiac.[12] Guts and his newly formed traveling party are currently preoccupied with the restoration of her fragmented mind in Elfhelm.