Marvel and DC movies have made some fantastic casting choices over the years, which makes picking the best one very difficult. With Deadpool & Wolverine's release, Ryan Reynolds and Hugh Jackman continue to make a case for their castings being top contenders. Christopher Reeve's Superman has a fair shot of topping most lists, as he just seamlessly fit Clark Kent and Superman. However, the MCU also has a couple of strong contenders in Robert Downey Jr.'s Iron Man — which was a perfect fit for the actor's personality — and Chris Evans' Captain America, who modernized a key hero.