Finding Marlin

Characters
Nemo, a Clownfish and Marlin's son.

Marlin, Nemo's father.

Dory, a Pacific Regal Blue Tang.

Gill, a Moorish Idol who is the leader of the Tank Gang.

Bloat, a Porcupine Pufferfish.

Deb, a Black and White Humbug who thinks her reflection is her sister Flo.

Peach, a Starfish.

Jacques, a Skunk Cleaner Shrimp.

Gurgle, a Royal Gramma.

Bubbles, a Yellow Tang.

Destiny, a near-sighted Whale Shark and Dory's childhood friend.

Bailey, a Beluga Whale.

Hank, an grumpy East Pacific Red Octopus who previously lost a tentacle.

Mr. Ray, a Spotted Eagle Ray and Nemo's teacher.

Pearl, a Flapjack Octopus.

Tad, a Longnose Butterflyfish.

Sheldon, a Seahorse.

Bruce, a Great White Shark who is trying to not eat fish.

Anchor, a Hammerhead Shark.

Chum, a Mako Shark.

Kathy, one of Mr. Ray's students.

Nigel, an Brown Pelican.

Gerald, a lonely Sea Lion.

Fluke and Rudder, a pair of California Sea Lions.

Becky, a crazy Common Loon.

Fred, a Giant Pacific Octopus.

Crush, a Green Sea Turtle.

Squirt, a Green Sea Turtle.

Flipper, a Bottlenose Dolphin.

More characters coming soon.

Short Film
The pixar short film "Fail to Catch the Fish" played before the movie.

Trivia
Coming soon...

References, Easter Eggs and Cameos
The Pizza Planet Truck can be seen driving when Fred and Marlin steal the truck headed for China, It is unknown if the truck's owner or the toys from Toy Story drive the Pizza Planet truck.

A113 appears on one of the Clownfish's labels when Marlin asks them where is his parents.

The poster for Pixar's other upcoming film Cars 4 appears behind the Truck that Marlin and Fred steal.

Even more coming soon.