"Papal Swiss Guard are the personal protectors of the Pope. They are a military organization and not a police force although some members do serve as a sort of secret service during public events.
Vatican City is patrolled by the Corpo della Gendarmeria of the Vatican City State which performs the regular police duties.
There have been 13 popes called Leo, and there appears to be no dispute about the numbering, as is the case with a few of the popes. See links.
There have been 8 popes called Urban.
Avignon, France, is sometimes referred to as the "City of Popes" because of the presence of popes and anti-popes from 1309 to 1423 during the Catholic schism.
There have been 13 popes named Innocent.
Yes, they had many differences on matters of authority and doctrine. Some Popes were even excommunicated by Church Synods (or Councils) and other rival Popes were elected in their place, called Ante-Popes.
There have been 6 popes who chose the name of Paul.
Popes & Patriarchs.
There have been 15 popes named Benedict. Pope Benedict X does not count as he was an antipope.
Generally referred to as a Papal Bull
It wasn't Monty Python - it was an SCTV sketch called "The Man Who Would Be King of the Popes".
Popes do not elect popes. Popes are elected by the cardinal electors.
They wore green uniforms, that's why they were called the green police.