The chapter analyses the increasing body of scholarships that aimed at decolonization of the process of knowledge production in relation to Indigenous/tribal communities, specifically concerning policies, administration, and development interventions that are designed for equitable community development. It explores the concept of “peripheral knowledge of tribal,” relating to both ontologically and epistemologically that aspires to go beyond Eurocentric (western) and caste-based frameworks primarily employed in social research tribal studies. This became necessary to address influences on methodologies in doing Indigenous or tribal studies in India by unravelling the limitations, domination, and misperceptions of the predominant western approaches. The chapter then re-imagines peripherality as a notion that is more than a scholarly pursuit to understand mere tribal marginality but proposes a way to understand the different layers of marginalized/minoritized/peripheralized conditions persist within tribal societies. For example, numerically smaller and endangered Indigenous/ethnic/tribal communities have been left out or remained obscured under the broader indigenous/tribal discourses. Keeping this in context, by focusing on the endangered Karbong community of Tripura in Northeast India as a special case, this chapter foregrounds the importance of recognition and incorporation of the peripheral knowledge and methodologies in doing tribal research that will help in analyzing and bringing the actual marginalizing roots and developmental need of marginalized/peripheralized community on the basis of respect, justice, and inclusivity.