In the Lord of the Rings movies, Elrond came across as a bit of a jerk, but that wasn't the case in J.R.R. Tolkien's books. This has a lot to do with changes in the story and characters surrounding Elrond, such as Aragorn and Arwen. However, it has a lasting impact on the impression of the powerful elf character, which contradicts the more canonical version of Elrond (at least regarding demeanor) in the Prime Video series, The Lord of the Rings: The Rings of Power.
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