Originally Posted by Dark Raven
Well, unless Viper is made subject to the same age retardation process that Jessica has undergone (as a result of Jonathan Drew's experiments and the High Evolutionary), which could allow Viper to have been present during pre WWII and still appear to be the same age in the present. However, Jessica was also in semi suspended animation for decades. However, unlike Steve Rogers, who was completely frozen, Jessica did continue to grow, but just aged at a very slow rate.
That seems rather convoluted for a movie that is supposed to be aimed the general audience. A movie should be more stream lined then that. Frankly I always disliked that the fact that there are dozens if not hundreds of people in the MU who were in alive during the 1940s and yet they look like they are in their 20s or 30s. One or two people like that is fine, but too many and you begin to wonder why immorality is not readily available to almost everyone in the marvel universe.