Mist
The great legends of old speak of Mist being the most beautiful, the most wise, and the most terrifying of the siblings. Her voice was gentle but her claws were not, and she was a formidable ally and terrible enemy.
Deputy: Deathfang (Deathstar)
Apprentices: Lionpaw (Lionwhisker)

Deathstar
She was described as a black and white she-cat, but her crimes are lost to legend. She was sharp and cruel, murderous and harsh. But those crimes are long forgotten in history.
Deputy: Lionwhisker (Lionstar)
Apprentice: Reedpaw (Reedfur)

Lionstar
Apparently a fluffy ginger Tom, who righted all of his previous leader's mistakes. He gave Mistclan a good name again, and made sure those memories were buried.
Deputies: Mossheart, Reedheart (Reedstar)
Apprentice: Ravenpaw (Ravenwing)

Reedstar
A dark grey she-cat with white paws, and a great penchant for snooping.
Deputies: Ravenwing, Brackenpelt, Skyfeather (Skystar)
Apprentice: Spiderpaw (Spidertail)

Skystar
A black Tom with white ears. He ruled the clan for a long time, and was extremely wise and protective of his clanmates. Was previously a kittypet.
Deputy: Mistfeather (Miststar)
Apprentices: Flowerpaw (Flowerpelt), Birdpaw

Current leader:
Miststar
A silver tabby she-cat with blue eyes, and known to be the smallest of the current leaders. She has a great grudge against Snowclan.
Deputy: Fernheart
Apprentices: Crowpaw (Crowfur), Larkpaw (Larkdawn)