Jen is a male Gelfling who is the main character in Winnie the Pooh and The Dark Crystal. In the film, he was an orphan raised by the Mystics after the Garthum killed his family. One day, He met Winnie the Pooh and his friends who had just arrived to the World of The Dark Crystal and he learns from his dying master, The Wisest of the Mystics that he is chosen to place a Crystal Shard on The Dark Crystal in order to restore their World and get rid of the evil Skeksis.
- Jen will meet Ash Ketchum and his friends in Ash Ketchum and The Dark Crystal.
- Jen will meet Littlefoot and his friends in Littlefoot and The Dark Crystal.
- Jen will meet Bloom and her friends in Bloom and The Dark Crystal.
- Jen will make his first guest appearence in a Land Before Time crossover film in Littlefoot Goes to FernGully: The Last Rainforest.