1. The Customer Representative
Focused on helping others (e.g. developers) understand what customers need, what their challenges are, what their pains and benefits are. From this perspective, the Product Owner tends to explain how our work impacts customers, users and business processes.
2. The Visionary
Clearly communicating the product vision, strategy, business goals and objectives to all relevant parties. A visionary Product Owner tends to focus on the future, on changing the status quo, and helping people see what could be, rather than what is.
3. The Collaborator
Engage and work closely with the various stakeholders and Scrum Team(s). A collaborative Product Owner tends to support people in their own discovery process, whether it is defining goals, clarifying PBIs or analyzing customer needs.
4. The Decision Maker
This helps the stakeholders and the Scrum Team to keep the time-to-market short, by keeping the decision-making time short. Every day, all kinds of decisions have to be made. Some can be delegated to the Scrum Team or stakeholders, some has to be picked up by the Product Owner himself.
5. The Experimenter
By formulating a hypothesis, explaining what we know AND what we don't know, by seeing much of the work we do as experiments, rather than 'fixed' work packages. The Experimenter understands the need to try new things, to explore, to innovate and therefore to experiment.
6. The Influencer
Who helps stakeholders to focus on the product vision, strategy, goals and objectives. Influencing stakeholders and the Scrum Team is a difficult but very important task. The Influencer uses effective communication, negotiation and influencing skills to get people on board with the cause.
Crucial Conversations® for Mastering Dialogue Effective communication skills for challenging conversations, where interests are high, emotions intense and opinions diverge. 
