Thomas Wayne Jr./Owlman. 

This is quite honestly in the whole entirety of DC/Marvel/Wildstorm/whatever the only character I want. He's never EVER picked up because people don't write their Bat-CSs as anything more than just having room for Bruce Wayne. They see Owlman as a poor knock off of Bruce,and that's fine. That's their opinion. But to me, he's my favorite character. I don't want anyone else. including Deathstroke. Noone but Thomas Wayne Jr.