How to use "megalomaniacs" in a sentence

The whole Danny Evans project is the work of a few megalomaniacs."

And a lot of people around him, a lot of people protecting him, people in research and people in charge of project security - they're also megalomaniacs

So megalomaniacs like Tamaguchi get involved

"But after everything you said to Zachariah about this place being run by megalomaniacs, and after you've made it so clear you don't agree with everything that goes on here, why do you want to stay?"