Mistrain is a silver and black tabby she-cat with ice blue eyes, a white chest and paws, and a chipped ear.
Mistrain was born to Snowdawn and Wolfclaw of MountainClan. Her brother's name is Stormwolf. Her mentor was Adderscale, but she was taught by both Adderscale and Redflame. She became a warrior alongside her brother in CanyonClan. She is now the leader of CanyonClan after Cougartooth died.