In the book, Victor has two brothers. william is more emphasized than ernest. william is killed by the monster (but he’s 5 years old) They could change the tale and make william older, and change his death cause (maybe victor accidentally killed him with his experiments and wants to bring him back?).
Other than that, there’s Henry Clerval, Victor’s best friend. I could see the writers changing it to ‘brother’.
Those are my two based-off-the-book theories. I am curious.
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