Saguaro is a female SandWing guard who seems to be interested in overthrowing Thorn with Fierceteeth. She has a scar across her chest right above her heart, probably scarcely surviving an assassination attempt. She is apparently a schemer, and connected to "great secret plans". In Prisoners, she exchanged letters with Fierceteeth in the dungeon, who was trying to get Saguaro to help her overthrow Queen Glory, and let her and Strongwings out of prison.