system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Why is Icon not part of Batman's anti-Superman contingency plans?

I recently learned about Icon, and it seems like he could tank Superman.
gpt
Apparently he hasn't been seen in the New 52, so he might not even exist in Batman's world right now.

Regardless, Batman wouldn't count on Icon because Icon is unpredictable. He has spent decades without using his powers, allowing countless crimes and atrocities to take place around him. 
 Icon's primary motivation is, or at least was, keeping Icon safe, not doing the right thing.

That won't cut it when you have to throw down with a Kryptonian.

Batman's contingencies for Superman are rock-solid. Batman has himself and a chunk of Kryptonite. 

If Batman fails, the Martian Manhunter might be able to take a crack at it, but he too is aloof and not completely understood by Batman.

But Wonder Woman? Batman knows Wonder Woman intimately, and he knows exactly how she would behave if Superman went rogue.

She's nearly as strong as him, appears to be faster than him, is a far superior warrior, and has magic weapons that can cleave atoms in twain and will cut through Kryptonian skin like a hot knife through butter.

And, most importantly, she is one hundred percent committed to justice. She is a true warrior, dedicated to her cause and willing to suffer to see that cause hold true. She would kill Superman without hesitation, if she actually, really had to. She might hate herself for it, but she would not shirk from her duty.

Icon? If Superman went rogue, Icon might very well assume a new identity and hide out for the next thirty years, hoping the whole thing blows over. That isn't a contingency plan, that's a gamble, and Batman only gambles when he gets to use his own deck of Bat-cards.