I just started reading Destroyer of Worlds yesterday, and Stanley Zmijewski comes across like a lunatic. Not a raving lunatic, but the kind you might sit down next to at a bar and strike up a casual conversation with; and only realize 15 minutes later what a terrible mistake that was.
His backstory is amazing, because it provides no meaningful information at all, and yet paints a vivid picture of a of a subtly disturbed mind.
His act one agenda-by itself-does not seem especially bizarre, just oddly simplistic. But the second act agenda adds context that that makes you realize that he is interpreting events around him through a very personal filter that doesn't include the big, or even medium picture; and that he is disconnected from the world as everyone else around him is experiencing it.
Now I really want to get Chariots of the Gods on my table, just so I can get through it and introduce my players to Stanley.
One plan I have is to start Destroyer of Worlds pronouncing Zmijewski correctly, like here: https://www.youtube.com/watch?v=xbpJEIyjlv8, (which sounds like, Jmi-ev-ski); and then when they start getting it right, change it to Zmi-jew-ski, so he never stops getting annoyed and making fun of their names in retaliation. Stanley will frequently complain that it is disrespectful that no one can be bothered to learn his name, and have generally inappropriate or non-sequitur reactions to social encounters that might raise their suspicions about his agenda. And then I just want to watch a player's reaction when they get to take him over in the second act and read his background and agenda card, as it clicks that the motivation for his odd behavior was simpler yet weirder than they had guessed.
I think I'm also going to make Zmijewski his own custom panic table with results that involve doing things with his belt, like making people smell it.