Avengers 4 directors Joe and Anthony Russo tease the possibility of Red Skull returning for another appearance in the MCU moving forward as he’s now able to leave Vormir, seeing as the Soul Stone no longer there. Introduced in Captain America: The First Avenger as the film’s main antagonist, Johann Schmidt is a former head of HYDRA. He later transformed into the Red Skull after taking an imperfect version of the Super Soldier Serum.
Mysteriously disappearing after touching the Tesseract/Space Stone with his bare hands toward the end of the film, fans didn’t really know what happened to the Red Skull, and that question became one of the biggest mysteries in the MCU for years. That is, until he made a surprise appearance in Avengers: Infinity War where he explained that he was sent to Vormir (the location of the Soul Stone) as a punishment for his ambition to wield the power of the stone for personal gain.
During Vudu’s Infinity War viewing party yesterday (which was live-tweeted by The Avengers’ official Twitter account), the Russo brothers were asked several questions sent by fans, one of which was whether or not the Red Skull can leave Vormir now that the Soul Stone is no longer there. The directing duo confirmed that he can finally leave the place after years of being trapped there, adding that he can even continue his pursuit of the stones if he wishes to. This also confirms that he wasn’t part of the unfortunate half of the universe who were snuffed out of existence after Thanos’ snap.
While Red Skull can get back into the thick of things anytime now, there are still several unanswered questions regarding his role as the gatekeeper of the Soul Stone’s location. For instance, while Infinity War revealed that the Space Stone banished him to the remote, barren planet, after attempting to acquire the gem himself, it wasn’t explained why. Perhaps the stones are sentient and have their free will (Red Skull did say that the Soul Stone “has a certain wisdom”), but it’s something that has never really been explored in the MCU.