When humans work together, there will always be someone who takes more initiative than others and acts as a leader. This person may tend to overestimate his/her own judgement and separate him/herself from the mainstream. Therefore, opponents will appear, criticizing the leader’s approach and goals. There also will be some followers of the leader who would rather act than talk about different views. And finally, there are bystanders, waiting for whatever happens.
Each persons in one of these roles will feel sometimes uncomfortable with the role of others. The leader will like the follower more than the bystander or the opponent. Opponents may be in competition with each other and find their arguments not sufficiently appreciated by the team members.
These roles are not bound to a person, they are not part of their character. A nice and kind person might be a great leader at a social center, but not at all in a football team. His opponent perhaps will be a great leader in a sport club. Thus, roles might vary according to circumstances and within one team.
For a team leader and also other team members, it is helpful to discover the right time and place for each role, that is: How can I make the best use possible of each role?