Nothing is known about her kithood, but it's said she was a bold, loyal and skillful warrior, known for her courage in facing enemies such as foxes, badgers and other cats. Mapleshade was a female she-cat born in ThunderClan, one of the five warrior Clans, during the time that Oakstar was leader. She is the main antagonist of the super edition Crookedstar's Promise and the novella Goosefeather's Curse, the titular main protagonist of the novella Mapleshade's Vengeance, a posthumous antagonist in the novella Pinestar's Choice, the overarching antagonist of the novella Spottedleaf's Heart, the overarching character in the novella Tigerclaw's Fury, one of the three secondary antagonists (alongside Brokenstar and Thistleclaw) of The Omen of the Stars, a mentioned antagonist in the super edition Crowfeather's Trial and a major antagonist in The Broken Code arc. Seasons later she returned, working for Ashfur and helping him in his scheme of destroying the living Clans, but following his defeat, Mapleshade fled along with Thistleclaw. During the Great Battle she killed Spottedleaf's spirit for protecting Sandstorm, before fleeing back into the Dark Forest.

There she began tormenting Crookedstar and manipulating Tigerstar, both of whom were descendants of Appledusk and Frecklewish respectively and later also served as one of the unofficial leaders of the Dark Forest, along with the latter and Brokenstar. She killed ThunderClan's medicine cat Ravenwing and a warrior Frecklewish, but died herself soon after killing Appledusk, before descending into The Dark Forest. Though this changed once she was exiled, her kits died and was rejected by Appledusk, the one she loved, and vowed revenge against ThunderClan, RiverClan, and the ones she blamed to have killed her kits. Originally ThunderClan warrior and later the Dark Forest resident, prior to her insanity she was an arrogant but loyal warrior. Mapleshade is one of the two overarching antagonists (alongside Thistleclaw) of Erin Hunter's Warriors book series. ~ Mapleshade revealing herself to Tigerstar Be patient, and you will find out everything

Much, much more lies ahead of us, Tigerclaw. For now, you don't need to know anything else. I have walked beside you from the day you were born, guiding your paw steps, laying out your destiny before you. I looked for revenge whenever I could! Why do you think I'm here?. Can you imagine what that feels like? To be rejected twice? To be a loner when all you tried to do was love? But don't worry, I made them pay.

Mapleshades vengeance