Michael was no stranger to Mexican standoffs. It felt like not too long ago, he was shooting his way out of a four-way battle between himself, two corrupt government agencies, and a private security company. While he was trying to calm everyone down, the man in the duster was still pointing a gun at the giant turtle...dragon...thing. He held the Uzi upwards, not pointing it at anyone, but merely keeping it on hand in case things got ugly. While the two faced off, a few things happened. What looked like a wooden doll approached the lizard and tried to talk to it, referring to it as "King Bowser", and referring to himself as "Geno". The fact that something made of wood could talk at all was incredibly bizarre, but he managed to ignore that fact for the moment. Instead, he filed away the information about their names, something which would likely be useful later.
While he hoped that the standoff would end soon, it seemed unlikely, as some guy in medieval looking armor came around and started shouting nonsense about empires and samurai. If this was Los Santos, he would have dismissed the guy as being on drugs or crazy, but since it was pretty obvious at this point that they weren't in Los Santos, he might have been telling the truth. Things only got worse as another guy showed up, carrying a scythe and looking like he was getting ready to attack Bowser. He kept an eye on all of them, trying to get them to calm down whenever possible.
Just about when he was getting ready to put his gun down, duster-guy decided that it would be a good idea to fire his revolver four times at Bowser. Before he knew it, he had his Uzi trained on him, ready to take him out if necessary. Before he pulled the trigger, he looked to check on Bowser, who, to his surprise, was totally unharmed. As the duster guy started talking about killing a "deathclaw" behind them, he lowered his Uzi, letting out a sigh. Great, he's a schizophrenic. Fucking lovely. After he shot at the imaginary creature, he began calmly chatting to the others, as if the whole standoff never happened.
Bowser, clearly, wasn't over it. His sudden outburst had, to be frank, scared the shit out of Michael. Although, he couldn't say he didn't agree with him. At the very least, it seemed to have had the appropriate effect. Taking in another deep breath, Michael put his Uzi back in his suit pocket, and walked up to the duster-wearing man and others. He looked at the duster guy in particular, and spoke to him.
"You're a real charmer, pal."