The list includes only the characters whose age has already been revealed:
#15 – WHITEBEARD & LITTLE OARS JUNIOR
Edward Newgate, more commonly known as “Whitebeard”, was the captain of the Whitebeard Pirates and was known as “The Strongest Man in the World” and “The Man closest to One Piece” after Gol D. Roger’s death. He was one of the Yonko that ruled over the New World until his death during the Battle of Marineford. He was 72 years old.
Little Oars Jr. is the captain of the Little Pirates, a descendant of Oars, and a subordinate of the Whitebeard Pirates. He is among the several New World pirates aiding the Whitebeard Pirates in saving Ace from execution by the World Government. He’s 72 years old.
#14 – CROCUS
Crocus is a doctor and the caretaker of the whale Laboon as well as the overseer of the Twin Capes Lighthouse that guides ships coming down from Reverse Mountain into the Grand Line. Though he was a lighthouse keeper for most of his life, he spent three years as a doctor serving as a part of Gol D. Roger’s crew. He’s 73 years old.
#13 – GERTH
Gerth is a giant from Elbaf and the doctor of the New Giant Warrior Pirates. She was formerly an S-Class ranked mercenary for Buggy’s Delivery. She’s 75 years old.
#12 – TSURU
“Great Staff Officer” Tsuru is a Marine Headquarters vice admiral. She’s 76 years old.
#11 – SILVERS RAYLEIGH & MONKEY D. GARP
Silvers Rayleigh, also known as the “Dark King”, is the former first mate of the Roger Pirates, known as the “Right Hand of the Pirate King”. He’s 78 years old (his birthday is May 13th).
Monkey D. Garp is a Marine vice admiral. He is the father of Monkey D. Dragon, the paternal grandfather of Monkey D. Luffy and the adoptive grandfather of Portgas D. Ace. He’s 78 years old too (his birthday is May 2nd).
#10 – SENGOKU
Sengoku the Buddha was the fleet admiral of the Marines pre-timeskip, succeeding Kong and preceding Akainu. He’s 79 years old.
#9 – MOTHER CARMEL
Mother Carmel was a child trafficker dealing in orphans who operated in the Underworld several decades ago. She took care of a young Charlotte Linlin, who would later go on to become the Yonko Big Mom. She was 80 years old.
#8 – HAJRUDIN
“Pirate Mercenary” Hajrudin is a giant warrior described as the “new generation” from Elbaf. He’s now the 6th division commander of the Straw Hat Grand Fleet. He’s 81 years old.
#7 – BROOK
“Soul King” Brook is the ninth member of the Straw Hat crew, and the eighth to join Luffy’s crew, as well as being the oldest and the tallest member on board. He’s 90 years old.
#6 – SANJUAN WOLF
Sanjuan Wolf is one of the Ten Titanic Captains, and the captain of the Seventh Ship of the Blackbeard Pirates. He’s 99 years old.
#5 – KUREHA
Dr. Kureha is a highly skilled and very long-lived doctor on Drum Island. She is referred to as “witch” by some people. She’s 141 years old.
#4 – DORRY & BROGY / MORLEY
Dorry the Blue Ogre is one of the two former captains of the Giant Warrior Pirates from Elbaf. He’s 160 years old.
Brogy the Red Ogre is one of the two former captains of the Giant Warrior Pirates from Elbaf. He’s 160 years old.
Morley is an okama giant and the commander of the West Army in the Revolutionary Army. He’s 160 years old.
#3 – JORL
“Waterfall Beard” Jorl was a giant and former co-captain of the Giant Warrior Pirates, along with Jarl. He was 344 years old.
#2 – JARL
“Mountain Beard” Jarl is a giant and former co-captain of the Giant Warrior Pirates, alongside Jorl. He was 345 years old.
#1 – ZUNISHA
Zunisha is a Naitamie-Norida elephant that wanders the New World and carries the island of Zou on its back.
In the ancient past, Zunisha was sentenced to walk the seas for eternity and only act upon being ordered to do so for committing an unspecified crime. Since then, it has wandered the sea of the New World and lived for centuries carrying the Mink Tribe and the other lifeforms on Zou.
Zunisha is the oldest living creature introduced in the series, with its lifetime predating even the Void Century. Zunisha infact is over 1000 years old.