The Batman Who Laughs' voice...

So I love the Batman Who Laughs - he is one of the most scariest and awesomest things I've ever seen in comics ever, but I must ask a question to all redditors: what kind of voice do you all imagine the Batman Who Laughs to have?

Like I read Batman and I have his voice as Kevin Conroy or Jason O'mara in my mind; Joker's would be Mark Hammill or Troy Baker... but I just can't imagine fusing the voices together for TBWL.

When I read TBWL, I imagine his voice to be really deep, nearly demonic kind of voice... But have the laugh of the Joker.