I am sought among many for what I can bring,
but those who seek me do not like my twin brother.
Both me and my brother can have power over others,
but do not worry, as we do not use it unless you are deserving.
My sister is said to be the star of the family.
But I like to think I am above her.
What am I?
Please explain each line with your answer.
I am one who seeks. (I don't like the evil twin!)