Well-known at home for his provocative quotes and colorful past as mayor of a local town, Duterte is an old hand at courting the local media, and voters, with his antics.
"We were affected by the traffic. It took us five hours. I asked why, they said it was closed. I asked who is coming. They answered, the pope. I wanted to call him, "Pope, (swear words), go home. Do not visit us again," he said.
'The Punisher'
As mayor of Davao City, a small metropolis of 1.5 million people on the southern Philippine island of Mindanao, Duterte made his name nationally for his no-nonsense approach to crime.
Duterte claims to have drastically reduced Davao's previously high rates of violent crime under his leadership.
Duterte himself confirmed the claims during a regular live weekly TV show broadcast locally in the Philippines last year.
"Me? They are saying that I'm part of a death squad? True, that's true," he said in a mix of English and Visayan, a language spoken in southern Philippines, before threatening to kill thousands more criminals if he was elected president of the Philippines.
When it comes to women, it's complicated
Duterte has also come under fire for his flirty behavior on the campaign trail, as well as for the large number of women in his life.
He has three children from his first marriage to Elizabeth Zimmerman, a partnership that has since been annulled. He currently has a common-law wife, Cielito Avanceno, who is better known as Honeylet, and has publicly admitted to having as many as three girlfriends.
Duterte's relationships and his public behavior -- he has faced allegations of sexual harassment, after photos of him kissing women seated on his lap during the election campaign started circulating locally -- have led many to question his attitude to women.
"Not ever. I have a mother, I have a daughter, I have a wife. Why would I do it? It's not an object [sic] simply because I am separated from my wife," he said.
President in waiting?
Despite his colorful background, Duterte remains extremely popular with the Philippine public, who admire his apparent no-nonsense attitude and his simple style.
The poll was conducted before his most recent controversy, so it remains to be seen if the international criticism will dent his home support or further strengthen his run to become the next Philippines President.