Who's the most unfairly overlooked comic-book hero?

Some heroes get all the attention. Batman's featured on TV and at the movies all the time, and has 10 comics a week. Even Aquaman had a pilot filmed. But which comic-book hero deserves more appreciation and exposure?

Please include a picture or clip of your chosen underappreciated hero. And mention his/her name, where they're published, and why they rule. Thanks!

Top image: Kate Spencer as Manhunter, DC Comics.