Polaris is Magneto's only daughter. Take that not-even-a-mutant-anymore Scarlet Witch! She inherited her father's power of magnetism, and more than a little bit of crazy. Either the most capable member of a team or a borderline lunatic, depending on the writer, she's also had a lot of really wacky costumes. Like this somehow amazing purple mash-up she wore when rejoining the X-Men.