Riverstar

River, or Riverstar, is a silver-gray tom with long fur and bright green eyes.

Long Shadows

 * River meets with the other ancient leaders: Shadow; Thunder; and Wind, to discuss the loner, Sol, with Midnight. It is mentioned he looked as if he was made of rain. River didn't want to come to the meeting in the first place, remarking: "What are we doing here?"

Secrets of the Clans

 * He is the founder and the first leader of RiverClan, working with Thunder, Wind, Sky and Shadow to develop the Warrior Code. It is suggested that he is the cat who thinks up a mentoring program for training apprentices. He was known to be generous and warm-hearted with his own Clan, but not interested in the other Clans' troubles, even skipping Gatherings if it was possible. It is unknown how he died.