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Only one man knows more secrets of black magic than I do! And he is the one who taught me years ago --- he is the master!! But the time has come for me to wrest those secrets from him! For it is I, Baron Mordo, who must be the most powerful magician of all!
~ Baron Mordo
Karl Amadeus Mordo, better known Baron Mordo, is a major antagonist from Marvel Comics and the secondary antagonist of the Dr. Strange series. He is a powerful and egomanical sorcerer whom happened to be the Ancient One's former pupil until he attempted to assassinate his mentor but is foiled by the new apprentice Stephen Strange, leading to Baron Mordo being cast out and Dr. Strange eventually becoming "Sorcerer Supreme." Mordo would clash with Dr. Strange on a multitude of occasions, at times with the backing of the demon Dormammu, going so far as successfully impersonating Dr. Strange for a short period of time.
Originally a Transylvanian nobleman born in Varf Mandra, Baron Karl Amadeus Mordo became a student of the Tibetan sorcerer known as the Ancient One. When Mordo plotted to kill his teacher, the Ancient One's visitor Dr. Stephen Strange learned of the plot, forcing Mordo to cast restraining spells to prevent him from warning his master or attacking him. However, Strange selflessly decided to accept the Ancient One's offer to learn magic in order to help the old man, and the Ancient One freed him from those spells, revealing he was fully aware were in place. The Ancient One trained him as a formidable enemy of Mordo and Mordo was exiled by the Ancient One.
Mordo later entered service to one of Dr. Strange's enemies, Dormammu, the Ruler of the Dark Dimension, becoming his emissary.
Powers and Abilities
Mordo's abilities were similar to those of Doctor Strange, but Mordo was particularly skilled at astral projection and hypnosis, as well as mesmerism. He was more than willing to use powerful black magic and invoke demons, both of which Strange was reluctant or unable to do, although both acts would sometimes backfire on Mordo.
Spider-Man Animated Series
Mordo was a recurring villain in the Spider-Man Animated Series as an enemy of Spider-Man and his ally Dr. Strange.
A former student of the Ancient One, he attempted to overthrow him but Stephen Strange discovered his plan and attempted to warn the Ancient One but Mordo used a spell to silence him. Fortunately the Ancient One already knew of Mordo's plan and effortlessly stopped it, banishing Mordo from his tutelage and taking Strange on as his apprentice. Mordo goes onto become high priest of the Dread Dormammu whom he seeks to release from the Dark Dimension. He controls a cult of worshippers whom he keeps under his control by casting illusions that delude them into believing that they are being reuinited with loved ones.
Mordo pursues the powerful Wand of Watoomb, brainwashing Mary-Jane Watson into becoming a member of his cult, showing her visions of her father. When Peter Parker comes to rescue her, Mordo brainwashes him by showing him visions of his deceased parents. He then sends his puppets, including Peter to raid Strange's temple and bring him the Wand of Watoomb. Using his Spider-Powers, Spider-Man overwhelms and his assistant Woo with the help of the other cultists. Mary-Jane makes off with the Wand but Strange captures Spider-Man and releases him from Mordo's mind-control. They then go to Mordo's temple where he is using the Wand in a ritual to open a portal to the Dark Dimension. Spider-Man gets the Wand off Mordo whilst Woo fights off the cultists. Mordo attacks Strange but proves no match for him. He pleads with Dormammu for help and Dormammu sends his servant some of his own powers from beyond the portal. Spider-Man jumps through the portal to fight Dormammu and is joined by Strange. They retrieve the Wand from Dormammu and escape, by which time Mordo has fled.
Baron Karl Amadeus Mordo is the secondary antagonist of the animated television movie, Doctor Strange: Sorcerer Supreme. Depicted as a fierce warrior, he and his fellow students are shown pursuing demonic beasts through downtown New York. Mordo however, is more concerned with killing the monsters than in actually protecting innocent civilians, causing more damage than the monsters themselves in his pursuit of them. This particulary shown where he, against Ancient One's suggestion to killed nearest Chinou (a species of invading demonic monster where at that time, two members of their kind sent for Sanctum Sanctorum) by divided his team into two groups so they can simultaneously killed two beast, resulting many of his friends got killed. Although a good fighter, he is pompous and not a particularly skilled sorcerer and his fellow students regard him with a mocking contempt due to him seeing himself as leader and his recklessness and lack of concern about their well being. He believes that he will be chosen as the Sorcerer Supreme, but the Ancient One denied it, saying that he never even contemplated him for the position (particulary for his recklessness that killed many of his friends when fighting Chinous) and feels Dr. Stephen Strange is more worthy in such position due to the doctor never obsessed with it. He instead giving him the task of training Strange in the art of combat.
When trained Stephen, Mordo took his anger on Stephen whom just learned how to use magic. In spite of his injured hands newly restored with his own sorcery through Ancient One's guidance, Strange was no match for Mordo, whom goes to killed him out of frustation. However, that is the moment where Strange realized that his skill in magic far superior than he believed: He discovered that he can absorb other's magic and turned it against them. Thanks to it, Stephen managed to defeat Mordo albeit accidently, enraged the disillusioned sorcerer until being stopped by Wong.
Humiliated, Mordo turns to the dark god Dormammu, offering to help him in his plan and Dormammu accepts his assistance. Although Mordo helps Dormammu succeed in entering the world, he is confronted again by Strange who once again effortlessly defeats him. Mordo howls in rage at his inability to defeat Strange before Dormammu, probably feeling embarrassed for Mordo at this point, devours him.
Marvel Cinematic Universe
In the Marvel Cinematic Universe, Mordo is played by Chiwetel Efiojor, who also played Victor Sweet in Four Brothers, Luke in Children of Men and voiced Scar in the 2019 film The Lion King.
Rather than being a villain, Mordo started off as a hero who made his debut in Doctor Strange as an ally of Stephen Strange. However, the main antagonist Kaecilius (played by Mads Mikkelsen) does bear some similarities to Mordo in comics, being a former student of the Ancient One who turned to the path of evil. That, coupled with Kevin Feige's statement where he found Mordo's descend into villainy in the comics too predictable for the audience, resulted his Marvel Cinematic Universe incarnation deliberately given a different route in his character development where in the series' proper, the result of his inability to comprehend the necessity to break the rules of nature should the situation calls for it.
Mordo eventually becomes disillusioned with the Ancient One's ideals, having witnessed Strange bend the rules of nature to defeat Dormammu and Kaecilius. Breaking off all ties with the Mystic Arts, Mordo embarks on a mission to eliminate the other sorcerers of the world, beginning with the Ancient One's former pupil Jonathan Pangborn by depriving him of his ability to walk, much to Jonathan's horror.
Mordo will return in Doctor Strange in the Multiverse of Madness.
Baron Mordo in Spider-Man: The Animated Series.
Baron Mordo in Ultimate Spider-Man.
Baron Mordo in Doctor Strange: The Sorcerer Supreme.
Baron Mordo in The Super Hero Squad.
Baron Mordo in Marvel: Ultimate Alliance.
Baron Mordo in Marvel: Avengers Alliance.
Baron Mordo in Marvel: Future Fight.
Baron Mordo in Marvel: Contest of Champions.
Baron Mordo in Lego Marvel Super Heroes 2.
DOCTOR STRANGE - After Credits Scene Mordo Kills Wizard "Too Many Sorcerers"
LEGO Marvel Super Heroes 2 - Mordo Boss Boss 14
Baron Mordo was created by the late Stan Lee and the late Steve Ditko.