Nutkin is a red squirrel who has a missing tail, taken from Old Brown.
Squirrel Nutkin is very mischievous and loves to have fun with Peter and his friends or his friends of the squirrel tribe. He lives in the Squirrel Camp in the treetops and loves hazelnuts, acrobatics, pinecone bowling, snowball fights, and just mischief-making. His crazy and occasionally ungrateful personality can make his literal servant, Felix, mad at him. This happened once, and it almost ended really badly.
Nutkin is Peter's squirrel friend who helps Peter whenever he gets captured by Mr. Tod, although on some adventures, Nutkin can hinder progress and put his friends in danger unintentionally. His tail was pulled off by Old Brown.
Above the world that the rabbits inhabit lives a squadron of squirrels who rule the upper canopy with a fascinating disorderly lifestyle. Above the treetops there are no rules. Anything goes. Their leader, Squirrel Nutkin, is excitable, funny and extremely animated, He's an agile and comical trickster who loves to taunt, confuse and trick the inhabitants of the wood.
- He can be quite bossy, as his friend, Felix, does most everything for him.