This work examines lay beliefs about the societal implications of different forms of ingroup identities. While secure ingroup identity reflects a genuine attachment to one’s ingroup members, defensive forms of identity are aimed at satisfying individual enhancement motives through highlighting belongingness to an exceptional group. The latter can be exemplified by collective narcissism, a belief in ingroup greatness and entitlement to privileged treatment, which has been linked to undesirable intra- and intergroup outcomes. In three experiments (total N = 473), conducted in the context of national identities, we investigated how people perceive the manifestations of collective narcissism, contrasted with secure ingroup identity, and low identity. Across all studies, participants expected the highest outgroup hostility and poorest intragroup relations from those high in collective narcissism. However, perceivers who were themselves high in collective narcissism were less likely to expect these undesirable manifestations, thus revealing a biased perception of similar others