This study explores the identity formation and experiences of 40 Blaxican, or Black-Mexican multiracial individuals in the United States. In-depth interviews and focus groups reveal that participants identify biracially as "Blaxican." Participants reject monoraciality and the common sense way of defining Blackness as defined by the one-drop rule of hypodescent. Participants are either bicultural or monocultural dependent whether they were raised in single parent vis-a-vis co-parenting households. The authentic expression of Blaxicanness is to identify as biracial and have a bicultural identity, therefore those that are monocultural work to incorporate both cultures into their identities. Parental socialization, peer groups, school and neighborhood contexts are the main socializing agents that shape Blaxican identities. I find that Blaxicans live in a borderlands space in between the social constructions of Black and Chicana/o identities. Black and Chicana/o peers police the boundaries around "authentic" half-Black and half-Mexican identity forcing Blaxicans to the borderlands where ambiguity, and contradictions are embraced. Blaxicans experience monoracial microaggressions (Nadal et al. 2011) that signal their non-normative, marginal and second-class citizen status.