Trish. She was a powerful character. I love her because she makes it seem like all of us can have powers without a freak accident. In the series she trains for all of her strength. All shows need a person like her.
Jessica Jones is terrifying and addictive. David Tennant's complicated villain will make you think about power dynamics and consent in a way you never thought to apply to a super hero series. Really good companion to his Barty Crouch too.