Finding Nemo and Ariel

Finding Nemo and Ariel is a crossover film set between Finding Nemo and The Little Mermaid.

From Finding Nemo

 * Marlin,  a male clownfish, Nemo's father
 * Dory,  a Pacific Regal Blue Tang
 * Nemo,  a juvenile clownfish, Marlin's son
 * Gill,  a Moorish Idol, and the leader of the group
 * Bloat,  a Pufferfish
 * Peach, a Starfish
 * Gurgler,  a Royal Gramma
 * Bubbles,  a Yellow Tang
 * Deb  (and "Flo," Deb's reflection), a Four-Striped Damselfish
 * Jacques,  a Pacific Cleaner Shrimp
 * Nigel,  a Brown Pelican
 * Crush,  a Green sea turtle
 * Squirt,  a juvenile Sea Turtle, Crush's son
 * Mr. Ray,  a Spotted Eagle Ray, the school bus of the class, and the teacher of the class
 * Bruce,  a Great white shark
 * Anchor,  a Hammerhead Shark
 * Chum,  a Mako Shark
 * Tad,  a juvenile Yellow Longnose Butterflyfish
 * Pearl,  a juvenile Flapjack Octopus
 * Sheldon,  a juvenile Seahorse

From The Little Mermaid
Ray-Ray, Cheeks, Shelbow and Ink Spot
 * Ariel
 * Prince Eric
 * Melody
 * Ursula
 * Morgana
 * Undertow
 * Sebastian
 * Flounder
 * Tip
 * Dash
 * King  Triton
 * Scuttle
 * Grimsby
 * Chef Louis
 * Flotsam and Jetsam
 * Carlotta
 * Herald the Seahorse
 * Max the Sheepdog
 * Cloak and Dagger