A man, small in stature, who attempts
to overcome the way he believes other people
perceive him (as a diminuative character) by 1) attaching himself to authority figures, 2) trying to manipulate himself into positions of control, 3) migrating toward positions of leadership, and 4) having a fairly
volatile temper.
I had a
boss with little man syndrome and
besides never being able to please him, he always had to
prove he was better than anyone else!