In recent years, recognizing patients’ experiential knowledge to improve the quality of care has resulted in the participation of patient advisors at various levels of healthcare systems. Some who are working at the clinical level are called accompanying patients (AP). A PRISMA-ScR exploratory scoping review of the literature was conducted on articles published from 2005 to 2021. Articles not in English or French and grey literature were excluded. The databases searched included Medline, PubMed, Scopus, and Google Scholar. The data were organized according to the similarities in the ethical foundations of the included papers. Out of 2095 identified papers, 8 met inclusion criteria. Terms used to describe APs included peer support, resource parent, and peer health mediator. The clinical settings included psychiatry/mental health and neonatology. APs, patients, healthcare professionals, managers and policy makers were included in the studies. Three personal ethical foundations describing the foundations of the AP role were found: resilience, listening skills and altruism. The ethical foundations of this role also addressed interpersonal and interprofessional relationships with other actors in the healthcare system. The literature on the ethical foundations of APs is sparse, with heterogeneous methodologies. Further studies mobilizing well-defined methodologies would further validate the current results and deepen our understanding of the ethical foundations of the AP role.