John Wick: Chapter 4.The film was released in the UK last week (March 24), and is the fourth instalment to the action-packed John Wick franchise.Following its release, many fans have noticed a cameo from the iconic Berghain bouncer, who appears several times throughout the film and has just one line: “I am Klaus”.The premise behind the fourth edition of the series follows the title character, as he attempts to take on the aristocratic crime barons who sit at The High Table’ – travelling across the world to do so. From there, the impeccably-dressed assassin heads to iconic locations including Paris, New York and Berlin, where he meets Marquardt.Here, his character is an associate of Wick and helps the title character to locate a villainous character whom he’s instructed to assassinate.