Klaus was the muscle of Shaw's team, and his right-hand man. According to Roman he is the evil twin of Luke Hobbs.
Fast and Furious Six
Klaus is a violent and exceedingly strong member of Shaw's team. He and Denlinger shot the electronic devices into Brian, Roman and Tej 's cars during the London chase. Klaus was also the first to notice that Letty had a previous connection to Dom and questioned her loyalties. He and Vegh travel to Brian and Mia's home and kidnap her and hold her hostage on the cargo plane. He attacks Dom and Hobbs but is eventually defeated when they work together to knock him unconscious. He was unable to regain consciousness before the cargo plane explosion, and is killed.
Klaus and Hobbs fight