A Bug's Life 2: Revenge of the Grasshoppers/Trivia

Toy Story franchise

 * The Pizza Planet delivery truck is parked right next to the trailer again.
 * Woody, Buzz, Rex, Hamm, Slinky, Lenny, Wheezy, the Green Aliens, the Green Army Men, Bo Peep, Jessie, Mr. Potato Head, Mrs. Potato Head, Dolly, the Peas In A Pod, Trixie, Mr. Pricklepants and Buttercup can be seen as silhouette figures, which is similar to Dug's silhouette figure in Ratatouille (2007).
 * Wheezy says to the filming camera in the end credits outtakes and bloopers reel: "Boy oh boy, I sure hope my squeaker's not broken again."

Finding Nemo, Finding Dory and Finding Marlin

 * Nemo, Marlin, Dory, Gil, Bloat, Gurgle, Deb, Peach and Jacques appear as cave paintings.

Inside Out, Inside Out 2, Inside Out 3 and Inside Out 4

 * Joy, Anger, Disgust, Fear and Sadness appear as shrubbery cut-outs.
 * Bing-Bong also appears as a shrubbery cut-out.

Monsters Incorporated, Monsters University and Monsters Hotel

 * Sully and Mike appear as wood carvings right by the former Ant Queen's grave in the Colony Council during the harvest festival party.

The Good Dinosaur, The Good Dinosaur 2, The Good Dinosaur 3 and The Good Dinosaur 4

 * Arlo appears as a life size statue right near Experion's hide-out.

Cars, Cars 2, Cars 3 and Cars 4

 * Real-life versions of Lightning McQueen and Mater appear on the main road

BRAVE, BRAVE 2, BRAVE 3 and BRAVE 4

 * Merida appears as a cave painting.

Tin Toy

 * Tinny appears as a silent and non-moving toy figurine in Experion's hide-out.

Luxo Jr.

 * The Luxo Lamp and the Luxo Ball appear inside PT Flea's circus tent.

Red's Dream

 * The red scooter appears right by the Pizza Planet delivery truck that's parked right next to the trailer.

Presto!

 * Presto DiGiotagione and his pet rabbit, Alec Azam, appear on a poster taped on a nearby bug theater.

Knick Knack

 * Knick, the living snowglobe snowman appears as a musical snowglobe right near the shady tree spot.

For the Birds and For The Ducks

 * The 4 wild birds that eat Exterion, Jumper, Stoungy, Skippy and Malter to their deaths resemble  Bully, Chipper, Snob and Neurotic.

LAVA

 * Uku and Lele, the singing volcano couples appear as cave paintings as well too.

Piper

 * The sandpiper that's flying right across the trees resembles the title character of Piper.

Coco, Coco 2, Coco 3 and Coco 4

 * Miguel's guitar can be seen right next to PT Flea's Bug Circus tent.

Cast Members reunited

 * The Inside Out movie series voice cast members: Bill Hader and Mindy Kaling voice Experion and Lacy in this sequel film.

Voice Cast Member Deaths and Replacements (except the former Ant Queen who was killed off in this sequel film)

 * 6 talented voice artists who voiced 6 characters in A Bug's Life (1998) had passed away over the past years. For example, Roddy McDowall, who voiced Mr. Soil in the original classic film, passed away from lung cancer complications at the age of 70 back on Saturday, October 3, 1998 (Ringo Starr becomes his successor), Madeline Kahn, who voiced Gypsy in the original classic film, passed away from ovarian cancer complications at the age of 57 back on December 3, 1999 (Drew Barrymore becomes her successor), Jonathan Harris, who voiced Manny in the original classic film, passed away from a blood clot to his heart at the age of 87 back on November 3, 2002 (John Cleese becomes his successor), the great and talented, Joe Ranft, who voiced Heimlich in the original classic film, passed away in a car accident at the age of 45 back on Tuesday, August 16, 2005 (his brother, Jerome Ranft becomes his successor), Phyllis Diller, who voiced the Ant Queen in the original classic film, passed away from natural causes at the age of 95 back on Monday, August 20, 2012 (her character's now killed off in this sequel film) and Alex Rocco, who voiced Thorny in the original classic film, passed away from pancreatic cancer complications back on Saturday, July 18, 2015 (Jim Cummings becomes his successor).