But a person can be easily given
power and in most senarios a leader cannot attain superiority without others to put them into power. It's not a question of competence or incompetence, it's marturity
that must be measured for good leadership, in my opinion. An intelligent, well liked individual can be easily voted into power because all they need is the support of the majority. Most leaders are put into power because of their character
. An upcoming leader can give the impression that he is the best canidate through fancy speeches, false promises, hiding blemishes on their record, and gaining the support of the elite. It becomes especially easy to obtain power if this person has developed a personality cult. I mean that's like getting a free season pass. But if this person does not have a required maturity for the job then they may not exercise their leadership for the benefit of their subordinates.
Once in power, all this leader needs to do is retain power. This is more much more difficult. One way to do so is by division of labour. Another is to break realationships of the leader's subordinates. The weaker the ties between the subordinates the more autonomy the leader has. But most of all the malevolent leader must keep a certain amount of ambiguity about their naughty doings and find something to cover it up or blame for it. This makes a great opportunity to attack the lower levels of the ranks or an outside source.