give an example of a charismatic leader. Why this leader?

Osama Bin Laden.
Barak Obama
Adolf Hitler
Rev Sun Myung Moon
Sgt. Alvin C. York, US Army
General Robert E. Lee, CSA
General Bob Pursley, USAF
General Curtis Lemay, USAF
Admiral Hyman Rickover, USN

You can do an internet search and read about these and make your own choices. Notice that in addition to personal characteristics, each had a mission to deliver, and each lived in the right time and circumstances.

I hope this helps.