Tom and Jerry Meet Harry Potter: The Prisoner of Azkaban

Tom Cat and Jerry Mouse double on the floor and laugh at Aunt Marge as she inflates like a giant balloon and floats up to the ceiling and drifts out of sight.

Having had enough, Harry gets Hedwig, Tom and Jerry, along with his belongings and leaves Number Four Privet Drive, forgetting about the permission form.

At Diagon Alley, Hermione adopts a cat named Crookshanks, much to Ron's dismay. Both being respective cats, Tom and Crookshanks quickly become fast friends.

On the Hogwarts Express train ride, Tom, curled up and lounging in Harry's lap, twitches his ears and his whiskers as he begins to sense a disturbance, upon waking up to see rotting hands and mysterious, dark, cloaked, faceless, ghostly figures outside the window. Tom screams in horror as lightning flashes to reveal the Dementors. Jerry shrieks as well.

Tom wants to go to Hogsmeade Village, but Jerry reminds the cat that Dumbledore has put his trust in them to keep protect Harry since his first year. Tom looks at the boy, whose burly and abusive oaf of an uncle, did not sign the permission form to attend the Hogsmeage Village, which means Harry cannot go, according to McGonagall's rule. Tom has offered to sign the form, but animals don't count as guardians.

The grey-furred pussycat realizes that Jerry is right, so he decides to stay with Harry and keep him company.

Year 3

 * Double, Double, Toil and Trouble ~ Hogwarts Choir
 * It's Ridikkulus! - Remus Lupin

Characters:

 * Thomas "Tom" Cat ~ a gruff, short-tempered, thick-skinned, yet well-meaning pussycat. He is Harry Potter's pet cat
 * Jerry Mouse ~ a mischievous brown mouse who loves to annoy and irritate Tom by using magic for playing pranks on the cat. He is Harry Potter's pet mouse. He
 * Tuffy Mouse ~ He is a young Wizard mouse-in-training at Hogwarts.
 * Harry Potter ~ an orphaned teenage wizard boy who attends Hogwarts School of Witchcraft and Wizardry with his friends Ron and Hermione, and of course, Tom and Jerry!
 * Hermione Granger ~ Harry's best friend and a brainy Muggleborn witch. She comes in possession of the Time Turner.
 * Ron Weasley ~ Harry Potter's best friend. He is the youngest son and second youngest child in the Weasley family.
 * Fred and George Weasley ~ Ron's twin brothers; fourth older. They love to play pranks and practical jokes, much to their mother's disapproval, and to Jerry Mouse's delight.
 * Ginny Weasley ~ Ron's younger sister who has a huge crush on Harry Potter.
 * Bill Weasley ~ Ron's eldest brother
 * Molly Weasley ~ Ron's mother
 * Arthur Weasley ~ Ron's father
 * Percy Weasley ~ Ron's third eldest brother
 * Cedric Diggory ~ a Hufflepuff student.
 * Hannah Abbot ~ a Hufflepuff student
 * Pansy Parkinson ~ A Slytherin student
 * McWolf ~ a sly and lecherous Wolf from the original Tex Avery Cartoons. He is Lucius Malfoy's right-hand man
 * Droopy Dog
 * Dripple Dog
 * Miss Vavoom ~ she is seen in cameo appearances
 * Sirius "Padfoot" Black ~ a wizard wrongfully convicted of mass murder ans sent to Azkaban Prison on the night of the death of Harry Potter's parents
 * Remus "Moony" Lupin ~ Harry Potter's third-year DADA teacher
 * Professor Severus Snape ~ head of the Slytherin House and Potions teacher.
 * Draco Malfoy ~ Harry Potter's rival and a Slytherin student.
 * Lucius Malfoy ~ Draco Malfoy's father
 * Professor Pomona Sprout ~ Herbology teacher
 * Vincent Crabbe
 * Gregory Goyle
 * Professor Albus Dumbledore
 * Professor Minerva McGonagall
 * Professor Flitwick
 * Mr Argus Filch
 * Crookshanks ~ Hermione's pet cat adopted from Diagon Alley
 * Dementors
 * Meathead Dog
 * Spike Bulldog
 * Tyke Bulldog
 * Shrunken Heads
 * Oliver Wood
 * Rubeus Hagrid
 * Hedwig the Owl
 * Barney Bear
 * Padme and Parvata Patil
 * Cornelius Fudge
 * Lee Jordan
 * Tin, Pan and Alley ~ Lord Voldemort's three loyal henchcats. In this film, they are seen speaking to Scabbers the Rat by Jerry, who is shocked to discover that his "friend" is truly an enemy
 * Peter "Wormtail" Pettigrew ~ A traitor to the Marauders and to the name Gryffindor. Whilst undergoing as an Animagus rat named Scabbers, he "befriends" Jerry Mouse on Harry Potter's first year of Hogwarts and gains the mouse's trust. Tom knew that he did not trust the rat right from the start.
 * Aunt Petunia Dursely ~ Lily potter's sister and Harry's aunt; she is also the wife of Uncle Vernon and mother of Dudley Dursley.
 * Aunt Marge Dursley
 * Uncle Vernon Dursley
 * Butch Dog
 * Ripper the Pitbull dog
 * Lily Potter ~ (née: Evans); Harry Potter's deceased mother. She died protecting her infant son Harry from Voldemort's killing curse
 * Red ~ a beautiful and attractive young woman pursued by McWolf from the original Tex Avery Cartoons.
 * James "Prongs" Potter ~ Harry Potter's deceased father
 * Rita Skeeter
 * Screwball "Screwey" Squirrel ~ a wacky and crazy squirrel

Cast

 * Billy West as Thomas "Tom" Cat
 * Samuel Vincent as Jerry Mouse
 * Veronica Taylor as Harry Potter
 * Mae Whitman as Hermione Granger
 * Matt Hill as Ron Weasley
 * Brian Donovan as George Weasley
 * Derek Stephen Prince as Fred Weasley
 * Rachel Lillis as Ginny Weasley
 * Andy Serkis as Buckbeak the Hippogriff
 * Dan Green as Sirius Black
 * Kirby Morrow as Young Sirius "Padfoot" Black
 * Scott McNeil as Remus Lupin
 * Brian Bloome as Professor Severus Snape
 * Steve Staley as Draco Malfoy
 * David Warner as Lucius Malfoy
 * Laura Bailey as Professor Pomona Sprout
 * Charlie Adler as Vincent Crabbe
 * A.J. Buckley as Gregory Goyle
 * Richard Newman as Professor Albus Dumbledore
 * Tabitha St Germain as Professor Minerva McGonagall
 * Corey Burton as Flitwick
 * Hugo Weaving as Mr Filch
 * Kevin Michael Richardson as Drekeus Dragon
 * Scott McNeil as Crookshanks, Unicorn, Fang
 * Scarlett Johansen as Nagini
 * Greg Berger as Roasku Dragon
 * John DiMaggio as Meathead Dog
 * Joanna Lumley as Molly Weasley
 * Dee Bradley Baker as Arthur Weasley
 * Dante Basco as Bill Weasley
 * Crispin Freeman as Charlie Weasley
 * Michael Reisz as Percy Weasley
 * Joshua Seth as Oliver Wood
 * John Goodman as Reubus Hagrid
 * Jim Cummings as Professor Quirrell
 * Kirby Morrow as Viktor Krum
 * Kelly Sheridan as Dolores Jane Umbridge, Hannah Abbot
 * Frank Welker as Hedwig the Owl, Lord Voldemort, McWolf
 * Greg Ellis as Tin
 * Jess Harnell as Pan
 * Richard McGonagle as Alley and Barney Bear
 * Steven Blum as Aragog
 * Fred Tatasciore as the Rock Troll, Horace Slughorn
 * Padme and Parvata Patil
 * J.K.Simmons as Cornelius Fudge
 * Cathy Weseluck as Lee Jordan
 * Cam Clarke as Godric Gryffindor
 * Olivia d'Bo as Helga Hufflepuff
 * Hynden Welch as Rowena Ravenclaw
 * Willem Dafoe as Salazar Slytherin
 * Jim Ward as Nearly Headless Nick
 * Mark Hamill as Peeves
 * Sarah Natochenny as Dennis Creevey
 * Zach Taylor as Colin Creevey
 * Travis Willingham as Fluffy, Young Severus Snape
 * Tom Kenny as Peter Pettigrew
 * Jeff Bennett as The Sorting Hat
 * Anna Graves as Aunt Petunia Dursley
 * Colleen Wheeler as Aunt Marge Dursley
 * Mike Pollock as Uncle Vernon Dursley
 * Kath Soucie as Tuffy Mouse, Mermaid 3
 * Eric Stuart as Amos Diggory, Young Peter "Wormtail" Pettigrew
 * Seth Green as Cedric Diggory
 * Clancy Brown as Butch Dog
 * Jeff Bergmen as Droopy Dog
 * Phil LaMarr as Spike Bulldog
 * Vanessa Marshal as Lily Potter
 * Tara Strong as Red
 * Nolan North as Young James Potter
 * Paul Reuben as Screwey Squirrel