Why was Pope Julius II nicknamed 'Papa Terrible'?

Answer 1

Pope Julius II was known for his terrible temper if he felt he was not being obeyed in what he wanted done. His falling out with Michelangelo over cancelling the commission that gave to built a tomb for himself and do a fresco painting of the 12 apostles on the ceiling of the Sistine Chapel. Michelangelo was angry that the tomb for Pope Julius II, that he'd already spent over a year working on and that he was a sculpture, not a painter. Michelangelo left Rome and went to Florence. Pope Julius's normal way of handling those that disagreed with him was to have them killed, but he had great respect for Michelangelo's talent and spent the next couple of years having emissaries sent to Florence to negotiate with Michelangelo, who finally agreed to do the frescoes.