Leo kept the bat aloft, even as whoever was trying to get in messed with the door some more. Why did they act like they knew him? No one he knew would be insane enough to come knocking at this door at this time, not without a call first and certainly not without identifying themselves first. They must’ve been casing this place for a while. Though why they chose to break in at a time when someone was sure to be home, he wasn’t quite sure.

Something about the voice was somewhat familiar, but he was unsure how. Maybe they were using a disguiser to make themselves sound like someone he knew. They sure chose the wrong voice then if he couldn’t identify it right away. 

“Go away! I’ve already called the police and I’ve got a blaster!”

There was probably a good reason besides not wanting to gamble that Leo didn’t play poker. But maybe the threat would be enough to make them think twice and go away.