Of Mice and Men is a masterpiece. It's incredible how heavily your opinions of the characters are affected by how they are interpreted by their peers, when the characters can appear to be very different if you evaluate them from an alternative approach or perspective. The narrative is arguably candid and unbiased, but the dialogue is not; whether you choose to agree with a characters' opinion or choose to formulate your own will decide how you determine a character and whether or not they are, "Good," or, "Bad." The would-be antagonists, for example, are only really portrayed as antagonists by the men of the ranch. If you were to develop an independent opinion of these characters, uninfluenced by the social perception that is demonstrated in the book, you would actually recognise an individual personality which isn't very antagonistic at all.