The Hangover Part II did not have the full support of my entire cast and crew." Liam Neeson replaced Gibson after being invited by Cooper, who worked with Neeson on "The A-Team", to take the part. Neeson, a fan of the first film stated, "I just got a call to do a one-day shoot on 'Hangover 2' as a tattooist in Thailand, and that's all I know about it". Gibson was reportedly furious over the decision. A source close to Gibson stated, "He doesn't understand why Mike Tyson, a drug user who turned his life around, was given a chance while Mel was kicked
The Hangover Part II Mr. Chow as an offensive caricature and stated doing the character was "very cathartic" for him and said the character "has the inflections of Vietnamese, with kind of the anger of my own Korean nature" although "it's definitely not about an accent, or a stereotype." As the film comes to a close, many photos are revealed depicting the events of the previous night. Among them is a photo which loosely depicts a famous war photo by photographer Eddie Adams of a public execution during the Vietnam War. Film critic Roger Ebert was amongst those who criticized use of the photo,