Spartina is one of Darkhaven's warrior does. She was chosen by Woundwort to trick the Watership Down rabbits into thinking that she is their friend, so she may spy on them and to find the location of their warren. However while she was there, Silverweed managed to see through her guise with his powers and she confessed everything to Hazel and the others, as she is beginning to have feelings for Bigwig. She returned to Darkhaven, in order to save Blackberry from being killed by Granite (under her orders), but she is soon held prisoner along with her. However she managed to escape along with Campion and Blackberry and aided the Watership Down rabbits in their fight against Woundwort. It's assumed she settles down with Bigwig at Watership Down after the final battle.