The authors briefly introduce the concepts, techniques, and theory of identity development associated with J. L. Moreno's (1946, 1969, 1993) Psychodrama. Based upon Loganbill, Hardy, and Delworth's (1982) model, counselor identity development is conceptualized as consisting of seven developmental themes or vectors (e.g., issues of awareness and effective use of emotions in counseling, issues of professional ethics in counseling practice, etc.). Development along these seven psychosocial vectors may be regarded as resembling the process of role repertoire expansion described in Moreno's (1993) identity development theory. The authors present four representative psychodrama activities that have been used with supervisees in group supervision.