Characters
- Jackson Curtis (Portrayed by John Cusack)
- Kate Curtis (Portrayed by Amanda Peet)
- Noah Curtis
- Lilly Curtis
- Adrian Helmsley (Portrayed by Chiwetel Ejiofor)
- Harry Helmsley
- Carl Anheuser (Portrayed by Oliver Platt)
- Carl Anheuser's mother
- Laura Wilson (Portrayed by Thandie Newton)
- Thomas Wilson (Portrayed by Danny Glover)
- Dorothy Wilson
- Charlie Frost (Portrayed by Woody Harrelson)
- Tamara
- Sasha
- Gordon Silberman
- Yuri Karpov
- Yuri Karpov's ex-wife
- Oleg Karpov
- Alec Karpov
- Aparna S. Tsurutani
- Satnam Tsurutani
- Ajit Tsurutani
- Tony Delgatto (Portrayed by George Segal)
- Wil Delgatto
- Yoko Delgatto
- Japanese wife
- Isaacs
- Roland Picard
- Captain Michaels (Portrayed by Stephen McHattie)
- Italian Prime Minister
- Canadian Prime Minister
- British Prime Minister
- Spanish Prime Minister
- Japanese Prime Minister
- Polish Prime Minister
- Greek Prime Minister
- Danish Prime Minister
- German Chancellor
- French President
- Russian President
- First Lady of Italy
- Queen Elizabeth II
- Prince Philip
- Sergey Makarenko
- Saudi Prince
- Vice President
- Governor of California
- Speaker of the House
- Chinese Colonel
- Chinese Premier
- Pope
- Grandfather Sonam
- Grandmother Sonam
- Lama Rinpoche
- Nima
- Tenzin
- Sally
- Scotty
- Frederick West
- Zultan
- Lokesh
- Birnbaum
- Lourke
- Gurdeep
- Merrill & wife
- Ark Worker
- Cashier
- Main Ark Communications Officer
- Boxing Announcer
- Ship Waiter
- Two old grandmas
- Humans
- Animals
- Alaskan Malamute
- American herring gull
- Aporosaura Lizard
- Bald Eagles
- Bears
- Beavers
- Birds
- Black bear
- Black rat
- Blue whale
- Bottlenose dolphin
- Bowhead whale
- Brown rat
- Bugs
- Burrfishes
- Butterfly
- Camels
- Cats
- Cetaceans
- Cheetahs
- Chickens
- Common Horse
- Corgi
- Cougars
- Cows
- Crocodiles
- Crows
- Deer
- Dogs
- Caesar (Tamara's Dog)
- Donkey
- Elephants
- Fin whale
- Fishes
- Flamingos
- Foxes
- Gators
- German shepherd
- Giant anteater
- Giraffes
- Goats
- Golden retriever
- Gorillas
- Grizzly bear
- Guinea Pigs
- Hamsters
- Hippopotamuses
- Horses
- House cats
- Humpback whale
- Hyenas
- Insectivores
- Jellyfish
- Kangaroos
- Kelp gull
- Killer whale
- Koalas
- Laborador retriever
- Leopards
- Lions
- Malayan tapir
- Mammals
- Meerkats
- Monkeys
- Mooses
- Mule
- Narwhal
- Nine-banded armadillo
- Octopus
- Ostriches
- Owls
- Panda
- Parrots
- Pigeons
- Pigs
- Pitbull
- Plains zebra
- Polar bear
- Pony
- Poodle
- Pug
- Rabbits
- Rats
- Red fox
- Rhinoceroses
- Roach
- Rock dove
- Rottweiler
- Seagulls
- Sharks
- Siberian Husky
- Sperm whale
- Squid
- Squirrels
- Striped skunk
- Tapirs
- Tigers
- Warthogs
- Western Lowland Gorilla
- White-tailed deer
- Wolves
- Zebras