Piggy and Ralph are the main characters of this story. I'm not quite sure if that's the answer you wanted so I apologize if it is and I understand if you do not give me Brainliest.
Mond's description in terms of family life, problems and world state is not accurate nor a good solution. It is because in Mond's words, you can tell that he tries to pin point the negativity of the world without looking on the brighter side. It is true that he has a point and the negativity happening in our world does happen but he does not try to open his view in positivity, that is why it wasn't accurate.