- Like many Hollywood spy films, this film is also set in Prague, Czech Republic, a city with the solemn, solemn, and magnificent Eastern European style.
- In the last film, Van Diesel’s pay was only 2.5 million U.S. dollars, and when the film’s producer negotiated with him to star in, Diesel already dared to raise his worth to 10 million. It is said that because The film company was unwilling to accept such a high price and wanted to replace Diesel with Ivan McGregor, but in the end, considering Diesel's popularity, gritted his teeth and sold 10 million for him to appear.
- In order to avoid a car crash with another highly anticipated film "Observations", the film company urgently postponed the release date of the film by one week, from the original August 2nd to the 9th. In this way, although this is incompatible with "Agents" "Kid II" has rushed together, but because of the different audiences facing it, there is no worry about the box office being hit.
xXx behind the scenes gags
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Xander Cage: You have a bazooka! Dude, stop thinking Prague Police and start thinking Playstation. Blow shit up!
Ivan Podrov: Is not bazooka. It's heat-seeker, right?
Xander Cage: Heat-seeker...
Xander Cage: [picks up heat-seeker rocket] Set it!
[Ivan activates heat-seeker]
Xander Cage: The son of a bitch is smoking.
[fires rocket, kills Kirill]
Xander Cage: I told him that cigarette was gonna kill him one day.
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Xander Cage: [after the party is raided, presumably by NSA] Okay, Okay, I'll turn down the music.