First appearing in the fourth issue of X-Men, Scarlet Witch (along with Quicksilver) was originally an enemy to the X-Men team.
He joined the Brotherhood of Evil Mutants, which was led by Magneto, their own father.
But here, Magneto still doesn't know that the Maximoff brothers are his children.
In Marvel films alone, he has become one of the strongest characters throughout the cinematic universe, and in the comics he is also one of the strongest mutants.
Of course in Marvel films, he's not a mutant, but a human trial from Scepter. Again the problem is because the copyright mutant is owned by Fox.
Dont forget to give upvote if you like and comment down below if something is disturbing your mind.