Ashley Tisdale as the leader of the Blueberry Scouts, a troop of ant children that Dot belongs to. [4]

Jonathan Harris as Manny, an elderly praying mantis magician with an English accent in the circus who is Gypsy's husband. Denis Leary as Francis, a hot-tempered male ladybug clown in the circus, who is frequently mistaken for a female and a group of Blueberry Scouts. Caught between the opportunity to turn around his fortunes within the colony, and the knowledge that the bug troupe are not who they appear to be, Flik advocates building a fake bird to scare away Hopper, the leader of the grasshoppers, who is deeply afraid of birds. The ants unite behind Flik's plan until the circus ringmaster, P.T. Flea, arrives to retrieve his performers, thereby blowing Flik's cover. As punishment for deceiving the colony, Atta foolishly banishes Flik, who sadly joins the rest of the circus. The plot of A Bug's Life focuses on an outcast ant named Flik who recruits a group of circus bugs to help him rid his colony of evil grasshoppers. The first shot in A Bug's Life starts from the point of view of a human and ends from the point of view of an insect, which is very complex. Because of its complexity, it was the most difficult shot in the film to produce. It was also one of the last shots produced for the film, because producing it required almost all of the production crew.A Bug's Life was a much more complex film than Toy Story because of the more complex character models, so Pixar's computers tended to run sluggishly for the animation process. Research for A Bug's Life was done using a small camera attached to Lego wheels, known as "the bug cam". Research was done in planters in front of Pixar Animation Studios and in a median strip on a highway outside of the studio. Indeed, Hopper's angered and worried expression leads Flik to realize that Hopper has always known how strong the ants are. However, Hopper's reaction to Flik's challenge in front of the whole ant colony, along with Princess Atta make them collectively realize that they vastly outnumber the grasshoppers, and that they needn't endure their oppression any longer. As Hopper tries to squish Flik, Atta defends him and revolts against Hopper.

The release date of Antz was moved up from March 1999 to October 1998 in response to Disney's refusal. Even though A Bug's Life was the first to be pitched, Antz was finished and released first. A Bug's Life, however, was more profitable. Madeline Kahn as Gypsy, a colorful gypsy moth in the circus who is Manny's wife and lovely assistant. Julia Louis-Dreyfus as Princess Atta, the heir to the throne, Flik's love interest and Dot's older sister.

The crowds of ants were particularly challenging, with some 400 crowd shots scattered throughout the film, with many requiring the animation of 800 characters. The technical team worked around this by instructing the animators to work with 4 or 5 groups of 8 to 10 ants. The software team wrote an "ant generator" program that would duplicate the character models and motions of the ants, and then automatically and randomly adjust the character models of each ant to change physical traits such as eye and skin color, height, and weight. The ants were then randomly scattered throughout the shot. This allowed these shots to be animated much more efficiently and for ants to look different from one another, despite the fact that the programmed motions would be nearly identical. These tools were based on existing "particle systems" that allowed autonomous dust and snow, which would eventually be perfected to allow up to 2 million dust particles on Wheezy's shelf in Toy Story 2 and 3 million hairs on Sulley in Monsters, Inc. Antz [ ] Joe Ranft as Heimlich, a large, gluttonous caterpillar clown with a German accent in the circus who desires to be a butterfly.