Julius sounds like a sociopath. Sociopaths have no empathy/morals, so they can confidently lie all day and still be perfectly fulfilled; and some of them can be very excellent at social manipulation. This level of confidence in all things, including complete bullshitting, and constantly climbing the corporate ladder for huge payoffs, is not too uncommon among them.

IMO, all you can really do around one is try to focus on yourself. Or get away as fast as you can, depending on the situation.