While the relationship between bureaucracy and democracy has gained attention in historical cycles, the literature on the roles of bureaucrats in relation to democracy has become increasingly fragmented. Drawing on comparisons among public administration theory, as well as participatory, deliberative, and collaborative democracy, this article provides typologies that reflect the historical multiplication of the theoretically determined roles and characteristics of bureaucracy that contribute to democracy. This comparative analysis has demonstrated a common democratic trend among the four schools in adding stresses on bureaucrats’ autonomy, morality, publicity, and direct connection to citizens, with a constant coexistence of rational and managerial elements.