I'm pretty much indifferent to almost all DC characters these days. I really struggle to find any of them interesting and I've basically stopped reading DC comics. This wasn't a conscious decision on my part but I found myself growing less interested in the characters after the initial burst of New 52 titles.
Traditionally, I've never been all that interested in:
Lobo
Jason Todd - As Robin or the Red Hood. More than any other character in comics he's the one I wished had stayed dead
Kyle Raynor - although I enjoyed Grant Morrison's take on him in JLA