Antisocial behavior is a frequent impairment in child population that requests psychological attendance. Its tendency to chronically aggravate and its restricted prognostic make early interventions and preventive approaches essential. Being the father personality its most relevant etiological factor, this study aimed to comprehend how it acts dynamically in the relationship with the child, promoting the upcoming of this condition. It was accomplished three case studies of fathers of antisocial boys, employing a psychological interview and the Procedure of Family Drawing with Stories. The results showed that the antisocial tendency is independent of the fathers personality structure and is related to the affective psychodynamic of this parent, particularly to his difficulty pulsional control, ambivalence acceptance of standards and limits, ambiguity on the fathers function, restriction of creative capacity, reduction in transitional experiences and imperfections in the process of integration of love and hate in the relationship with the son. Thus, there is the need to perform interventions including this parent in the attendance of the antisocial child.