You want to show your interviewer that you work well with every person, even though you recognize there are some folks out there who are quite difficult to please. This can be a challenging question to answer, but it can be done with grace. Think about the person who is seen as hard to please or the person people are intimidated by. Tell the interviewer what made this person challenging, as well as their relationship to you. Be sure to mention a few positive things about the person as well, while still making your point. Next, share how you feel your responsibility is to work well with your team and help out however you can, so you chose to adapt to work with this challenging person. Finally, be sure to laugh a little about the situation along the way. It will help to lighten the mood and show the interviewer you understand some people can be challenging in any situation that you find yourself in.