Once a hygienic, good-looking, popular, athletic man who in his youth, had the perfect girlfriend and was admired and envied for his wit and charm. But as he grew up and matured, this man turned into the complete opposite of what he was in his younger days. The delta male is referred to as a "has been" and is used to refer to the lowest caste of the hierarchical society. A delta male is subordinated to all others in the community and is in a continuous struggle of trying too hard to fit in a society where he no longer belongs.
I'd like to remember Marc for who he was in junior high, but it's just too bad he grew up to be such a delta male.