Katana and Batman in “Unfinished Business”

Anything you like to tell me?

You think I'm the Golem? Since Alfred left, you've gone with me on every patrol.

Please, I still need to sleep. What are you down to, four, three hours a night?

What's your point?

I know you're patrolling without me. And when you're not, you spend more time training here and less time as Bruce Wayne. But it still wouldn't surprise me if the Batman turns out to be the Golem.

Except he's not. So who is?