Within the game's data, there are unused files for Vision, Valkyrie, Black Bolt and Medusa grouped together with the base roster characters. Based on this and how the game's cutscenes feature them prominently, they may have been considered to be added as playable characters during development, but were scrapped at some point. In regards to Black Bolt and Medusa, there also exists an unused "Inhumans" team bonus.

The Punisher normally does not have any Hero Traits. However, when he was first introduced, there was a bug that mistakenly gave him the Super Strength trait. This error was fixed in a future update.