Someone who is hostile, selfish, and unreliable would score low in two dimensions from the Five Factor Model, which are: agreeableness (for hostility and selfishness), and conscientiousness (for unreliability).
Agreeableness refers to the degree to which someone is willing to acquiesce to another individual – thus making them generally more forgiving and helpful. Low scorers would be more prone to fighting with other people than high scorers, and tends to put themselves first. Conscientiousness refers to the degree to which someone is well-organized and disciplined – the lower the score, the messier and less organized the person.