This document summarizes different roles that are helping to build the field of systems change. It includes two tables: Table 1 describes roles at different stages of systems change work including intrapreneurs, strategists, illuminators, facilitators, conveners, and experimenters. Table 2 outlines the types of challenges that systems change leaders are tackling such as sustainability, public services, health, education, and finance/economy. It provides examples of individuals and organizations working in each of these areas.