Fantastic Beasts: The Secrets of Dumbledore shows Credence Barebone (Ezra Miller) wearing shoulder-length hair and dark clothes that mirror Snape's (Alan Rickman) style in Harry Potter, thus spoiling Credence's ending in the five-movie saga. Fantastic Beasts 2 came with a significant plot twist, as Gellert Grindelwald (Johnny Depp/Mads Mikkelsen) revealed Credence's identity as Aurelius Dumbledore. Credence seems to embrace his newly-found identity in the third Fantastic Beasts installment by changing his style — its uncanny similarity to Snape's style is not a coincidence.
Severus Snape is arguably the most complex character in the Harry Potter series, being portrayed as a villain for most of the seven books before J.K. Rowling revealed his undying love for Lily Potter, and loyalty to Albus Dumbledore. In The Deathly Hallows, Snape becomes the true Harry Potter antihero. He protects Harry (Daniel Radcliffe) out of the selfish need to assuage his self-loathing at being partially responsible for Lily’s death. Snape's work to defeat Voldemort is similarly driven by his guilt and need for vengeance against the man who murdered Lily. While Snape is seen through Harry's eyes, and only revealed as the antihero late in the saga, Credence is introduced in Fantastic Beasts And Where To Find Them as the antihero.
Related: Fantastic Beasts Explains How Hagrid Got Aragog — Harry Potter Theory Explained
As a child, Credence was constantly abused by his adoptive mother, Mary Lou Barebone (Samantha Morton), and tortured by the Obscurus, which possessed Credence because Mary Lou forced him to suppress his magic. Throughout the three Fantastic Beasts movies, Grindelwald manipulates Credence, who believes only Credence is powerful enough
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