Russet was one of two twin squirrels who were members of the Circle that sympathised with Crispin's case when the squirrel was being sent into exile by King Brushen. He was described as being tall with the tip of his left ear missing.
He bravely directed the damming of hills to prevent landslide, allowing Juniper to join the process as well. Russet joined Crispin and Tipp at Swan Isle and fought bravely defending the Tower. Along with his brother, he was considered for Captaincy, but declined because if one of them became a Captain, the other wouldn't.