I liked it - and not just because it's about one of the best villains ever of the best superhero ever. I enjoyed the tone. It felt unhinged.
I really like this, and I think with a few changes, it could really be a great piece.
Please allow me to make a few suggestions.
I would add 'greatly' to the end of the first line, as well as a second 'suffered' to the start of the second. My main reason for these two suggestions, is that it would start your piece of with a crisper rhythm.
I would strike out the word 'completely' from the fourth line. 'Mad insane' is more of a colloquialism, and so less used, which is more interesting for the reader. It'll also suit the character better.
I think 'Who am I? One guess', would work better than 'Who am I?' and then 'I'll give you one guess' on another line, as it keeps the flow better.
I think 'The Bat's' would flow better than 'Bats', and finish your piece off with more of an umph.
I would love to read a redrafted version of this again. I think you can make it a little longer, and I certainly think you could make the character even more dark and twisted.
Regards,
Bradley
P.S. Please comment and vote honestly on every piece you read.