This chapter investigates the European Economic and Social Committee (EESC) and the Committee of the Regions (CoR), two bodies established in 1957 and 1992, respectively. Both Committees are consultative; their rationale is to provide expertise to EU legislators and to represent functional respectively territorial interests. These organs share a number of similarities with regard to their legal basis and policymaking influence. Both have pursued diverse activities beyond their official mandates in a quest to find their own identities and exercise voice in the EU system. This chapter analyses these committees with regard to their development, membership, and activities, illustrating how both embraced timely topics and seek to involve themselves in the larger debate on the future of Europe. Thereby, they contribute to the EU’s development as a complex, multilevel, and multichannel democracy.