The present article reports on a study that explored identities in the context of a pre-service cohort’s online discussion group. The authors identified six main emergent identities –sociable, supportive, open, helpful, reliant, and hidden. It was also found that one category of identities emerged from a commitment to the social expectations and values of the group, whilst another emerged out of a personal resistance towards the social norms of group participation and involvement. In order to promote a collegial online environment, the findings indicate that pre-service teachers consistently exhibited and conceptualised sociable, supportive, helpful, and reliant identities when interacting within this online forum.