Otter is a dark brown Northern river otter who was once Franklin's best friend. She moves away in a story shown early in the program's first season. Otter comes for a visit in the second season, but the reunion is bittersweet, with the village not remaining the same as Otter remembered it. Otter was voiced by Sophie Lang in the first season of the show. Her return visit was voiced by Marieve Herington.
- Her appearances in the Stephen Squirrelsky and Friends' Movie Spoof Travels are Cloudy with a Chance of Meatballs, Finding Alvin, Animated Tale, The Forest Book 2, Nikki's Adventures of Sing Along Songs Episode 10, Madagascar, and Sleeping Beauty and will even be in more movie spoof travels.