One Piece: 5 Best Mentors of the Straw Hat Pirates, Ranked

The Straw Hat Pirates didn’t get strong on their own in One Piece. Behind Luffy’s crew stands a quiet lineup of teachers, father figures, and old warriors who handed down everything from Haki to kitchen knives to hard-won moral codes.

Some trained their students for years, others left after a single act of sacrifice, but each one shaped who these pirates became.

5 Fisher Tiger’s Sacrifice Shaped the Man Jinbe Would Become

Fisher Tiger from One Piece | Credits: Toei Animation

Fisher Tiger didn’t train Jinbe with drills or sparring – he raised him. A former slave who broke into Mary Geoise alone to free hundreds of Fish-Men, Tiger built the Sun Pirates on one code: fight for freedom, never kill a human out of hatred. Jinbe grew up under that code, watched Tiger die refusing a blood transfusion rather than break his principles, and carried that restraint into everything he did afterward, including his Warlord years. It shaped the man Luffy would trust completely. He rounds out this list since his mentorship was moral, not hands-on.

4 Dr. Hiriluk Gave a Lonely Reindeer a Reason to Become a Doctor

Dr. Hiriluk from One Piece | Credits: Toei Animation

Hiriluk found a lonely, wounded reindeer in the snow and did what nobody else on Drum Island would: he took Chopper in, patched him up, and let him stay. He wasn’t a great doctor, but he believed illness could always be beaten and that a person only truly dies once forgotten. That belief, tangled with his cherry-blossom obsession, is why Chopper wanted to become a doctor at all. His death under Wapol’s rule lit Chopper’s entire path forward, making it one of the saddest backstories ever. He ranks fourth since his impact was emotional and foundational, not built through actual training.

3 Zeff Sacrificed His Own Leg Long Before Sanji Ever Held a Knife

Zeff from One Piece | Credits: Toei Animation

Before Baratie existed, Zeff was “Red-Leg,” a pirate captain who lost his crew to a storm and ended up stranded on a freezing rock with a starving nine-year-old named Sanji. Eighty-five days in, he handed Sanji every scrap of food he had left and quietly ate his own leg to survive, never asking for thanks. That sacrifice became the foundation of Sanji‘s cooking, his fighting style, and his refusal to let a hungry person walk away empty-handed. He sits third because his mentorship was proven with his own body before any lesson was ever taught.

2 Dracule Mihawk Turned a Sworn Rival Into His Own Sword Student

Dracule Mihawk from One Piece | Credits: Toei Animation

Zoro spent years chasing Dracule Mihawk‘s title, only to end up living under his roof. After Kuraigana, stripped of pride and desperate to catch up to Luffy, he agreed to train under the man he’d sworn to beat someday. Two years of sparring, Haki drilling, and quiet afternoons farming with humandrills turned him from a promising brawler into someone who could hang with monsters of the New World. Mihawk never lowered his standards for him. He lands second because his lessons sharpened a rival into a real swordsman, even if Luffy’s growth still edges him out.

1 Silvers Rayleigh’s Brutal Two Years on Rusukaina Forged Luffy Anew

Silvers Rayleigh from One Piece | Credits: Toei Animation

Rayleigh was Gol D. Roger’s right hand, the “Dark King” who’d lived a legend’s life before Luffy found him. When the Marineford Arc left Luffy shattered, Rayleigh didn’t coddle him – he dragged him to Rusukaina and spent two brutal years drilling Observation, Armament, and Conqueror’s Haki into him, alongside starvation and wildlife trying to kill him daily. That’s not tutoring, that’s forging. Every time Luffy freezes an enemy with sheer will now, that’s Rayleigh’s fingerprints on it. He tops this list because no other mentor reshaped a Straw Hat this completely in so short a window.

What are your thoughts on our picks for the best Straw Hat mentors? Who’s your favourite? We’d love to know your opinions in the comments below.

The One Piece anime series is currently available to watch on Crunchyroll.