Syndrome was originally going to be named "Xerek". It was changed because they were afraid the voice actors wouldn't be able to pronounce it.

The kid on the tricycle is an inside joke representing the real life personality of John Lasseter, the chief creative officer at both Pixar and Walt Disney Feature Animation. During production of his films, he is usually waiting for something amazing to happen in regards to the animation or special effects, and later (during production) has been heard several times to remark of such amazing results as "totally wicked". Submitted by Jazetopher

The family's last name, Parr, was chosen on purpose, as it sounds exactly like the golf term "par" - which means average. This was done as a clever pun to further point out that Bob literally went from an "Incredible" to "Average" when superhero work was banned. Submitted by Jazetopher

Craig T. Nelson is the voice of Bob Parr. When he accidentally breaks the car door and mutters to himself, you can hear him saying "Oh geez." This was written in once Nelson was cast as Bob Parr, as this is a phrase of frustration commonly used by Nelson's character on the "Coach" show. Submitted by Jazetopher

Not only do the saucers sound like podracers from the Phantom Menace, they change to sound like the speeder bikes from Return of the Jedi.

Syndrome acts almost identically to Gizmo from the Teen Titans comics. Both of them are extraordinarily brilliant, insanely arrogant geniuses that plan to use highly advanced technology to get their way. Plus, both of them died because of their overconfidence (Syndrome, because he didn't think that a cape might be a bad idea, and Gizmo, who got shot while trying to take out his boss after a raid on Lexcorp Industries).

Some of the characters in this film bear visible likenesses to other famous villains. Bomb Voyage, the french villain at the beginning, looks almost exactly like the Joker, and the Underminer at the end of the film acts and appears in almost exactly the same way the Mole Man did in the Fantastic Four comic books.