Needless to say, we’re going to have to talk about some spoilers for Avengers: Endgame, so keep reading and watching at your own risk if you haven’t seen it. Tony Stark was the protagonist of Iron Man, which kicked off the Marvel Cinematic Universe all the way back in 2008. We’ve seen him face his greatest fears, including the Mad Titan Thanos, and help train new superheroes like Peter Parker, Rhodey and even Pepper Potts. We all know he made the ultimate sacrifice, so let’s talk about how that all played out and what it meant. While Tony Stark was motivated by fear, Natasha Romanoff was always seeking redemption. In Age of Ultron, she admitted to feeling like a monster because of her past. According to actress Scarlett Johansson, she was always trying to redeem herself and, by sacrificing herself for the Soul Stone and to protect Clint Barton, she was finally able to be at peace. Only time will tell what effect this will have on Clint and whether he continues his journey as Ronin or Hawkeye.