What character in the Winnie the Pooh films was added by Disney and does not appear in the original books?

Gopher is the character in the Winnie the Pooh films that was added by Disney and does not appear in the original books. Gopher was introduced by Disney to add more humor and comic relief to the stories, providing a character with a distinctive voice and a love for digging tunnels. While not a part of A.A. Milne's original books, Gopher has become a beloved and recognizable character in the Disney adaptations of Winnie the Pooh.