In the absence of his owners, Fred transforms into his alter-ego Nature Cat, narrating himself as such throughout the show. He is the main protagonist in leading a group of three other animals, frequently using the expressions "tally ho!" and "onward and yonward!" when initiating and continuing his adventures, lending to his optimistic and cheerful attitude in encouraging enthusiasm for the natural world. Actor and comedian Taran Killam appraises Nature Cat as a positive character for children, describing his handling of adversity as “a great example of when you fall down you get back right up… and try it again[12]”. He will occasionally drop from his ‘Nature Cat’ persona where, much like a regular housecat, he can suddenly become nervous or frightened. This can include having to interact with water, lamenting “why did it have to be water?”, but in these situations he ultimately ends up finding confidence to persist. When Fred turns into Nature Cat his clothes are all green.