Bertus de Villiers is a Visiting Professor of the Law School of the University of Johannesburg and a Member of the State Administrative Tribunal of Western Australia. He is a Fellow of the Alexander von Humboldt Stiftung (Germany). He specialises in the areas of minority and indigenous rights, decentralisation, human rights, and land reform.

Saldi Isra is a Constitutional Law Professor at the Faculty of Law of Andalas University in Padang, West Sumatra, and the Deputy Chief Justice of the Constitutional Court of Indonesia. Prior to his appointment to the Constitutional Court in 2017, he was Director of the Center for Constitutional Studies (PUSaKO) at the Faculty of Law of Andalas University from 2005–2017.

Pan Mohamad Faiz is a Constitutional Law Expert. He works as the Head of the Research Center of the Indonesian Constitutional Court. Faiz is also an External Research Fellow at the Center for Public, International and Comparative Law (CPICL). He received his PhD in Constitutional Law from TC Beirne School of Law, the University of Queensland, Australia.