Ermine is the son of Klaus, Marten's brother and Verruca's nephew. He has black and white fur and green eyes. He has the ability to control winds, create tempests, and even fly using wind drafts.
Ermine was born to Klaus alongside his brother Marten. He was the toughest out of all the kids born in the prison and normally had to come to his cousin, Sable's defense when he was bullied. When he escaped prison with his friends and family, Ermine proved to be resourceful and a tough fighter. He was known for beating up thugs and thieves in the streets of the Valley of Peace. He rescues Macaque from a pig bandit who was trying to steal the former's bag of bananas. The two became friends immediately.
Ermine is violent, irritable, and no-nonsense. He can however be friendly at times, and he does have a sense of humor. He seems to be the strongest of his family and thus is the one who is the first one into a battle and he seldom fails in a fight. He prefers to resolve things without violence but he is not above using violence and dirty tactics, especially when his family and friends are involved. He is also a polite gentleman as seen respectfully retuning a stolen purse to an elderly lady goat and calling Macaque friend upon their first meeting.
Despite his seemingly cold nature, Ermine loves and cares for his younger brother.
Ermine and Macaque appear to be best friends, starting when the former rescued the latter from a thug.
Ermine is well-liked by his friends but appears to have a rivalry with his cousin Tayra.
Trivia:
Ermine's name is a reference his species.
Ermine appears to be the largest and most muscular compared to his brother and cousins.