Darkdapple is a smoky gray she-cat with blue eyes and a white chest.
When Stratuscloud dies, she is very grieved, and becomes very cynical and snappish.
She is shown to be surprised when Mousetalon arrives to ThunderClan later. She argues atrongly against the WindClan warrior joining, along with Firefang and Fawndapple. She later reveals that she blames Mousetalon for Magiceyes's death, as she was with the patrol that fought in the battle, even though Magiceyes started it. She threatens to kill Mousetalon if she joins ThunderClan.
She goes to the Dark Forest.
Before her sister and apprentice died, Darkdapple was friendly and warm, a favorite of the Clans. But after their deaths, she spiraled downwards. She blamed herself for not being able to do anything, and soon started to become crazy.
By the time she killed Mousetalon, she had gone into insanity.