Black Adam introduced Doctor Fate to the cinematic DC Universe, though this was years after Doctor Strange first showed up in the Marvel Cinematic Universe. These two are some of, if not the most powerful sorcerers in their respective universes, and at one point, they were actually the same hero. This happened through an amazing amalgam of universes that changed Marvel and DC forever.
The iconic DC Vs. Marvel crossover of the '90s briefly gave rise to the Amalgam Universe, combining heroes from both companies' worlds. Doctor Fate and Doctor Strange were both a part of this, but their union also involved another iconic superhero. Here's how Amalgam Comics united the two biggest magic users in today's superhero movies.
Amalgam Comics Merged the MCU's Dr. Strange With Black Adam's Dr. Fate
The storyline of the DC VS. Marvel crossover involved two interdimensional brothers that represented those respective universes. Seeking to see which was stronger, they pitted these worlds' heroes against each other, with the winner being able to destroy the loser's universe. DC's Spectre and Marvel's Living Tribunal acted to prevent this, resulting in the creation of the Amalgam Universe. Here, the various heroes and their collective histories were combined into one, resulting in "metamutants" such as Dark Claw and Super-Soldier. One of these strangest combinations of this story actually united three different heroes.
Dr. Strangefate was the Amalgam Universe's combination of Dr. Strange and Dr. Fate, but his secret identity was that of the telepathic Charles Xavier. His vast mystical and psychic powers made him a key member of the Judgment League Avengers, though he would later begin staying to himself more and more. In fact, his actions would become increasingly dark, with his using the villainous Big Question (a combination of Daredevil's nemesis The Kingpin, and DC's Riddler) as a mere puppet for power. This would lead to his own corruption after the destruction of the Amalgam Universe.
Dr. Strangefate Made Enemies of the Justice League and the X-Men
The Dr. Strangefate one-shot (by Ron Marz, José Luis García-López, Kevin Nowlan, Matt Hollingsworth, and Chris Eliopoulos) during DC Vs. Marvel had the Lord Supreme of Order discovering that two universes had preceded the Amalgam Universe. After becoming aware that the man Access was the key to restoring those worlds, and thus destroying his own, Strangefate sought to capture him and keep that from happening before eventually conceding defeat. This came once he realized that his world was no longer meant to be.
The sequel miniseries DC/Marvel: All-Access (by Ron Marz and Jackson Guise) revealed that Dr. Strangefate remained in the consciousness of Dr. Strange, and he slowly began manipulating the events of both realities that were once part of the Amalgam Universe. Manifesting in the Sanctum Santorum and bringing the JLA and the X-Men with him, the restored Dr. Strangefate pitted the two teams against each other before amalgamating the heroes together.
The only hope of stopping him was once again Access, who released the astral form of the real Dr. Strange to combat Strangefate. Merging with his Amalgam doppelganger, Strange defeated him, but not without mercy. He recreated the Amalgam Universe and placed Strangefate there among the other heroes. This was the last "Amalgam" crossover, with Marvel and DC having not collaborated ever since. Given The Rock's hopes of pitting the DCU against the MCU, however, Pierce Brosnan and Benedict Cumberbatch could combine forces - and forms - as a live-action Dr. Strangefate in the future.