[quote=@Sep]
Too start my own discussion, who is your favourtie [i]underrated[/i] villain? Someone that never really grows (but has the potential to do so), or someone that just gets isnta-knocked out. Why are they you're favourite?
[/quote]

Dr. Thomas Elliot aka Hush.

I feel as though more than any of Batman's rogues, Hush has the explicit opportunity to be Batman's Mirror Universe Counterpart. Bruce's parents were murdered, Thomas murdered his parents. Thomas was jealous of Bruce's seemingly carefree life while forced to go to school after school to pursue a medical degree while Bruce was free to travel the world. I just feel that beyond his introductory arc, Hush has never been made a legitimate threat again despite this being a man who was able to cut out Selina's heart and keep her alive or perform open heart surgery on himself. Not to mention making his face look identical to that of Bruce's. 

Elliot is able to physically go toe to toe with Bruce and given his knowledge of the human body should be able to target vulnerabilities with surgical precision. He's a master strategist and during the pair's childhood, Thomas always beat Bruce at their 'friendly' games of chess.

I would just love to see Hush rise to the same notoriety as Joker, Two-Face, Riddler etc especially because I think Hush is far more of a threat than a lot of Batman's 'A-List Rogues'.