Kaecilius is a disciple ofBaron Mordo, who delivers messages and even fightsDoctor Strange himself if necessary. One of his first missions is to kidnap theAncient One, a task he fails due to Doctor Strange's interference. At one point, Mordo possesses Kaecilius to test the powers ofDormammu.[3]
Kaecilius steals Strange's Cloak of Levitation before he erases Kaecilius's knowledge of magic.[4]
Kaecilius and his cohorts, Adria and Demonicus, pose as members of the Independent Video media network to interview Strange and gain access to theSanctum Sanctorum. Claiming to be the cameraman Joe Crocker, Kaecilius is exposed and banished to the Purple Dimension.[5]
Many years later, he is freed and battles Strange andJane Foster.[6][7]
During theDeath of Doctor Strange storyline, Kaecilius is accused of killing Doctor Strange and is killed when a temporal clone of Strange uses him to resurrect the original. He would later be proven to have killed Doctor Strange.[8]
Kaecilius appears inDoctor Strange, portrayed byMads Mikkelsen.[1] A combination of several villains from the comics, Kaecilius was used in the film to drive the introduction and development of bigger villains for the future, includingDormammu and "certain individuals who live in other dimensions".[10][11] This version was motivated to become a Master of the Mystic Arts after the death of his family, and became disillusioned with what he considered theAncient One's hypocrisy, subsequently choosing to serve Dormammu by using the same life-extending ritual his former master used to channel theDark Dimension's energy. Believing in Dormammu's promise of eternal life, Kaecilius and his zealot followers destroy the Masters of the Mystic Arts'Sanctums to allow the Dark Dimension to consume Earth. However,Doctor Strange convinces Dormammu to renounce his attack on Earth, after which Dormammu drags Kaecilius and his followers into the Dark Dimension.[12][13][14]
An alternate universe variant of Kaecilius appears in theWhat If...? episode "What If... Howard the Duck Got Hitched?", voiced by Jared Butler.[15][16]
^ab"Kaecilius Voices (Doctor Strange)". Behind The Voice Actors. RetrievedApril 23, 2025. A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information.
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