Welcome to Larian. They always have a mix of a dark setting, crazy characters and adding funny stuff everywhere. If you think that this funny stuff is actually funny depends on your personal taste. They just add crazy stuff everywhere so you find at least some of it and they hope you like more than half of it. Compared to the previous games it is already more serious and I like this.
If this was a movie, think of it as a mix of Alien (dark horror setting), Deadpool/suicide squad (lots of psychos and lots of action, takes nothing too serious), a disney cartoon and some realism (some things characters do or say actually makes sense). A little bit of everything. After slaughtering some monsters you sing a happy song and then you blow up the whole place with oil barrels.
Prof. Dr. Dr. Mad S. Tist
World leading expert of artificial stupidity. Because there are too many people who work on artificial intelligence already
Prof. Dr. Dr. Mad S. Tist 
