Who is the superhero twin brother of Scarlet Witch?
The superhero twin brother of Scarlet Witch is Quicksilver.
Quicksilver, whose real name is Pietro Maximoff, is a Marvel Comics superhero who possesses superhuman speed, agility, and reflexes.
He and Scarlet Witch, whose real name is Wanda Maximoff, are mutants who are the children of the supervillain Magneto. Quicksilver has been a member of various superhero teams, including the X-Men, the Avengers, and X-Factor.
He has also appeared in several Marvel Cinematic Universe (MCU) films, including "Avengers: Age of Ultron" and "WandaVision."