He is somewhat of an annoyance to his team, yet is shown to have a soft spot. He is like a carefree uncle to his team and possibly shares a brother relationship with Simba since they're both kings.
- King Julien met Winnie the Pooh and his friends in Winnie the Pooh Goes to Madagascar.
- King Julien met Simba, Timon, and Pumbaa in Pooh, Simba, Timon, and Pumbaa's Adventures of Madagascar: Escape 2 Africa.
- King Julien made his first guest appearence in a Lion King crossover in Simba, Timon, and Pumbaa's Adventures of We're Back! A Dinosaur's Story and there at the end, he and Maurice and Mort joined Simba and his friends on their adventures.
- King Julien made his first guest appearance in a Winnie the Pooh crossover in Pooh's Adventures of The Lion King II: Simba's Pride.
- King Julien guest starred again Pooh, Simba, Timon, and Pumbaa's Adventures of Scooby-Doo 2: Monsters Unleashed, Winnie The Pooh in The Festival of The Lion King, the Walt Disney World version of Winnie The Pooh In Fantasmic!, Winnie the Pooh's World of Color, and Winnie the Pooh in Animagique.
- King Julien will meet Littlefoot and his friends in Littlefoot Goes to Madagascar.
- King Julien will make his first guest appearance in a Land Before Time crossover film in Littlefoot's Adventures of Ghostbusters.
- King Julien will meet Bloom and her friends in Bloom Goes to Madagascar.
- King Julien will meet Thomas, Twilight Sparkle, and their friends in Thomas and Twilight Sparkle Go to Madagascar.
- King Julien will meet the FT Squad in The FT Squad's Adventures in Madagascar.
- King Julien will meet Roary and his friends in Roary the Racing Car Go to Madagascar.