References to upcoming films

Some of the Easter eggs in animated films that were coming after them. Thus, these were called at the time of release references to upcoming films.

Instances in MGM films
More coming soon!
 * Upside Mystery - Laura Quayle's creation can be seen while Hans Truman and Jason Truder were in Los Vegas Detective School, an allusion to Drilling Pursuit.
 * Drilling Pursuit - A Stella Lee figure can be seen while Woody Allenson was receiving a letter from Captain Rudy Gordon, an allusion to Upside Mystery 2.
 * Upside Mystery 2 - A magical pool can be briefly seen while Hans, Jason and Stella Lee were on tour at Old York, an allusion to Swan Dream Pool.
 * Puma Race - A Saturn planet can be briefly seen as the trophy at Julius's stadium, an allusion to Saturn.
 * Saint College - A Sherlock picture can be briefly seen while Lana was entering math class, an allusion to Sherlock Gnomes.

Instances in Disney films
Coming soon!

Instances in Pixar films
Coming soon!

Instances in 20th Century Studios films

 * Unbelievable, Mister Billie - Images of Tinkers are seen at the office, an allusion to Pat & Mat.
 * Pat & Mat - The posters of Mr. Deitch was shown in Mrs. Merlot’s house, an allusion to Pat & Mat 2: Traffic Jam.
 * Pat & Mat 2: Traffic Jam - Ferngully poster was shown in Pat’s home, an allusion to FernGully: The Last Rainforest.
 * The Smart Dog: Pascal and Dave’s Grand Adventure - The picture of Pat and Mat are shown in Dave’s living room, an allusion to Pat & Mat 3: Adventure in London.
 * Pat & Mat: Journey Into Space - Garfield toy was shown in Pat’s living room, an allusion to Garfield: The Movie.
 * Pat & Mat: The Truck Problem - The poster of Rodney and Fender are shown in Mat’s room, an allusion to Robots.
 * Puppet Pals - When Nathan discovers Tinywood for the first time, a citizen is reading a newspaper that has a Kate & Chris comic strip on it.
 * Kate & Chris - In Kate's room, a Crystal plush doll can be briefly seen on an shelf, an allusion to Crystal.
 * Crystal - A painting of Princess Joanna can be seen when Crystal visits the village, an allusion to Puppet Pals 2.
 * Pat & Mat - A picture of Blu and Jewel are shown in Pat’s living room, an allusion to Rio.
 * Puppet Pals 2 - A Alaina Gleen plush doll briefly appears on a dresser in Princess Joanna's bedroom.
 * Alaina Gleen - TBA.
 * Crystal: Coming of Darkness - TBA.
 * Little Lily - A lizard depicting Toby briefly appears in a dark forest when Lily, Princess Naomi, Oliver, and Chester are exploring in, an allusion to Puppet Pals 3.
 * Puppet Pals 3 - TBA.
 * Alaina Gleen 2 - TBA.
 * Crystal: The Lost Realms - TBA.
 * The Pixelators - Alaina Gleen appears and meets Officer Alice Summers along with the Fox Animation Girls, in honor of Alaina Gleen: Imaginary Vacation.
 * Alaina Gleen: Imaginary Vacation - A magazine Cassie Baxter is reading has a picture of Princess Joanna on it, in honor of Puppet Pals Forever.
 * Puppet Pals Forever - Peppy Penguin appears in the 20th Century Fox Animation logo in the film, an allusion to The Pixelators: Level Two.
 * Crystal: The Rise of Darkness - TBA.
 * The Pixelators: Level Two - One of the signs in Pixel City depict Alaina Gleen, an allusion to Alaina Gleen: World's Most Wanted.
 * Pat & Mat: The Movie - The robot Ron stuffed toy can be seen in Pat’s room, an allusion to Ron’s Gone Wrong.
 * Alaina Gleen: World's Most Wanted - A "Cool Spot" poster appears on the backside of a bus where Alaina Gleen and King Duke ride in it, an allusion to Cool Spot: Spot Goes to Hollywood.
 * Cool Spot: Spot Goes to Hollywood - Felix Fox and Benjamin Bird appear on a graffiti, an allusion to Twentieth Toons: Quest for the Toon Temple.
 * Twentieth Toons: Quest for the Toon Temple - TBA.

Instances in Columbia Pictures films

 * The Two Rabbits in the City - A Mole stuffed doll was shown in Jerry’s owner’s room, an allusion to The Little Mole.
 * The Little Mole - The Zathura poster was shown on the wall of Lisa’s forest service, an allusion to Zathura.
 * The Little Mole II: The Adventures of The Hedgehog - The picture of Cody Maverick was shown when The Hedgehog finds his way home, an allusion to Surf’s Up.
 * The Little Rabbit in the Woods - Steve the monkey was shown as the statue when the Little Rabbit grew up as an adult is looking for food, an allusion to Cloudy with a Chance of Meatballs.
 * The Two Rabbits in the City 2: The San Francisco Rabbits - When Jerry and Lizzie goes to San Francisco with their friends, we see the poster of Baby Brent sardines which can be found at San Francisco international airport, an allusion to Cloudy with a Chance of Meatballs.
 * Paradise Maori: Tales of Maria the Hare - The poster for Cloudy with a Chance of Meatballs was shown on the bus where Maria and Patrick were looking for the new home in Māori.
 * The Little Mole and the Lost Blue Dragon - Flint Lockwood doll was shown where Princess Midnight found it at the dungeon, an allusion to Cloudy with a Chance of Meatballs.
 * The Big Bunny in Town: A Happy Rabbit Adventure — Clumsy Smurf was shown in the mailbox where Brent finds the letter, an allusion to The Smurfs.
 * Paradise Maori 2: The Beach Adventure - Photos of Smurfs can be found at the billboard which takes place in Māori, an allusion to The Smurfs 2.
 * The French Dog named Badger - Dennis doll was shown when Badger is playing with it, an allusion to Hotel Transylvania 2.
 * Mighty Pals: The Three Friends in the Forest - The Mole doll was shown when Max is carrying it, an allusion to The Little Mole: The Chronicles of the Mythical Forest.
 * The Little Mole: The Chronicles of the Mythical Forest - Spider-Man 2099 and Spider-Man figurines was shown in Little Mole’s room, an allusion to Spider-Man: Across the Spider-Verse.
 * Paradise Maori 3: The Big Tiki Adventure - Maria, Patrick and their adult kits sees the images of Lyle, an allusion to Lyle, Lyle, Crocodile.

MGM
Coming soon!

20th Century Studios
Coming soon!