Effective mentorship, due to the developmental nature of the experience, hinges upon the people involved--specifically, the personal characteristics of the mentoring collaborators. In this paper, the author explored requisite participant characteristics for peer group mentoring. One dozen executive-level professional women shared their stories-of-experience as participants in peer mentoring groups. A thematic analysis was utilized to investigate the narrative data from these interviews. Findings suggest that these participant characteristics include (a) an intrinsic interest; (b) a learning disposition; (c) a commitment to the mentoring experience; (d) comfortability with vulnerability and having the courage to share struggles; and (e) an inherent desire to support others in their learning, growth, and development.