"President" Zartan addresses one of his impostor Secret Service agents as "Zandar." In the 1980s and 1990s G.I. Joe comic books, toy lines and cartoons, Zandar was Zartan's brother who had similar disguise abilities.
This film was originally scheduled to be released on June 29, 2012. Paramount had begun a substantial ad campaign which began in February with an expensive ad during the Super Bowl. But in May 2012, Paramount announced they were delaying the film's release until March 29, 2013 in order to to add 3D effects. It was later revealed that the real reason for the delay was for reshoots including more scenes with Channing Tatum. Test audiences wanted more scenes between Tatum and Dwayne Johnson and Tatum suddenly became a box-office star with the successes of The Vow (2012) and 21 Jump Street (2012).
Jinx is seen training with Snake-Eyes dressed in a red outfit, as in her original appearance in G.I. Joe: The Movie (1987). Later on the mountain she is seen in her black and yellow ninja suit from G.I. Joe: Sigma 6 (2005).
The vehicle driven by Roadblock in the final action sequence is a relatively new U.S. Military vehicle called the Ripsaw. As of 2013 it is deployed in a display capacity for the U.S. Army. It can reach top speeds of above 80 mph, and an amphibious version is in the works.
In the G.I. Joe (1985) cartoon Flint and Lady Jaye had a bit of a romantic relationship with each other. In the comic book series, they are an actual couple. This relationship is foreshadowed following Lady Jaye's visit to the presidential party.
His face is only seen for roughly three seconds (not counting the few times you see his photo on a computer). The rest of the time his character is played by Jonathan Pryce as Vosloo's Zartan is impersonating The President via the nanotechnological disguise.
The trivia items below may give away important plot points.
In the final fight between Zartan/President and Storm Shadow, a metal case in the background bears the logo of the Umbrella Corporation, the villainous organization from the Resident Evil series of video games/cartoons/movies.
The world's eight nuclear nations meet at a summit held at Fort Sumter. The events of the summit vaguely mirror the famous American Civil War battle at Fort Sumter, in which nobody from either side of the conflict suffered any losses (save for one malfunctioning weapon that resulted in the death of a Union soldier) in that even though all eight nations launch their nuclear arsenal, nobody is killed by nuclear weapons in the end.