Cast
Mary Poppins: Minnie Mouse (Disney)
Extras with Minnie: Daisy Duck and Clarabelle Cow (Disney)
Bert: Mickey Mouse (Disney)
Extras with Mickey: Donald Duck, Goofy (Disney), and Peter Pan (The latter character foreshadows his bigger role in the sequel as Jack)
Jane Banks: Wendy Moira Angela Darling (Peter Pan)
Michael Banks: Michael Darling (Peter Pan)
Extras with Wendy and Michael: John and Nana Darling (Peter Pan)
George Banks: George Darling (Peter Pan)
Winifred Banks: Mary Darling (Peter Pan)
Ellen: Mrs. Beakeley (Ducktales (1987))
Mrs. Brill: Auntie Shrew (The Secret of NIMH)
Uncle Albert: Mad Hatter (Alice in Wonderland (1951); Ironically, Ed Wynn played both these characters)
Mr. Dawes Sr.: Mr. Burns (The Simpsons)
Mr. Dawes Jr.: Smithers (The Simpsons)
Admiral Boom: Admiral Bobbery (Paper Mario: The Thousand-Year Door)
Binnacle: Mr. Krabs (Spongebob Squarepants)
Katie Nanna: Mrs. Puff (Spongebob Squarepants)
Andrew the Dog: Pooka (Anastasia)
Cartoon Characters: Stays the same
Chapters
Chapter 1: Opening/Winds From the East, Mist Coming In
Chapter 2: Mrs. Puff Quits/The Perfect Nanny
Chapter 3: Minnie, Daisy, and Clarabelle Arrives/A Spoonful of Sugar
Chapter 4: Into the Pavement Chalk Drawing/Jolly Holiday
Chapter 5: Carousel Horse Ride/Supercalifragilisticexpialidocious
Chapter 6: Bedtime/Stay Awake
Chapter 7: Peace and Happiness in the Darling House/Pooka's Urgent Message
Chapter 8: Uncle Hatter/I Love to Laugh
Chapter 9: Minnie, Daisy, and Clarabelle's Reverse Psychology to George/Feed the Birds
Chapter 10: A Visit at the Fidelity Fiduciary Bank/A Run on the Bank
Chapter 11: Back Home/Up on the Rooftops
Chapter 12: Step in Time/Giving George the Tuppence
Chapter 13: George Discharged/A Wooden Leg Named Smith
Chapter 14: Let's Go Fly a Kite/Ending
For gallery: Minnie Poppins Gallery
For sequel: Minnie Poppins Returns