Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lacks newness of the original

Robert Downey Jr. returns as the superhero with a new foe, the son of his Father's former partner. This leads to the usual exciting finale of the battle between the hero and the villain. The film lacks the sense of discovery that the first Iron Man had, with Tony Stark's Iron Man now a well-known public figure. The introduction of Scarlett Johansson as a karate expert is a welcome addition to the franchise, as her character kicks some serious booty. Overall, disappointing. The first was much better. Seeing Iron Man put the suit together and emerge as a superhero was what made the original exciting. This one is just a below average action film.