Sometimes people have a hairdo so big it seems like it has a mind of its own, and moves on its own accord. And then there are the people who have the ability to make it move. Characters with superpowers that allow their mullets to become murderous. To allow their ponytails to pummel. To allow their pigtails to pick fights. To allow their braids to barrage. To allow their... OK, I'll stop now.

Depending on the sense of realism (or lack there of) the show or comic expresses, this can act as a Green Lantern Ring, with characters able to form everything from extra arms, to mallets, to chainsaws with just a flick of their hair. Required Secondary Powers are necessary if the hair can support more weight than the wielder's scalp and neck.

Source: TVtrope