The Red Hulk almost showed up much earlier, and was pegged as being the only Hulk that Marvel wanted to showcase.

With the iconic Red Hulk now introduced to the MCU, there are many other important Marvel villains that should appear in the franchise next.

Later on, Captain America would send Red Hulk down to Vegas to investigate Agent Venom, another villain-turned-anti-hero. There the two would be joined by X-23 and a female Ghost Rider named ...

The big question once the film is done and dusted is when will the Leader and Red Hulk meet their green nemesis ... re spiritual evil counterparts (e.g. Venom is a big, freaky version of Spider ...