Ivankov is one of the commanders of the Revolutionary Army who was once imprisoned in Impel Down. He arrived at Marineford to help rescue Ace and reveal the truth about Ace's past. During the time skip, Sanji trained in Ivankov’s homeland after being sent there by Kuma from Sabaody Archipelago. Here are 7 facts about Ivankov in One Piece.
Still Able to Acquire Information
Despite having been imprisoned in Impel Down for a long time and hiding in Level 5.5, Ivankov, as a Revolutionary Army commander, remains informed about global affairs. This demonstrates that even Impel Down, known as the strongest prison, has loopholes allowing prisoners to obtain information.
Helping Luffy Save Ace
After successfully rescuing Luffy, Ivankov initially had no intention of leaving Impel Down Level 6. However, his decision changed upon discovering that Luffy was Dragon’s son. Interestingly, Ivankov also believed that Ace, referred to as Luffy’s brother, was another of Dragon's children.
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Ivankov’s Unique Hair
During the Marineford War, Inazuma hid inside Ivankov's hair to recover after being poisoned by Magellan's Devil Fruit powers. Previously, Inazuma received treatment aboard the ship after escaping Impel Down with Luffy and other former prisoners en route to Marineford to rescue Ace.
Knowing Crocodile’s Big Secret
While Luffy was attempting to save Ace, Crocodile asked to be taken along. Initially, Luffy refused. However, Ivankov convinced Luffy to take him, as Crocodile was terrified of the Revolutionary Army commander revealing his secret—though the nature of this secret remains unknown to this day.
Partnered with Inazuma
Ivankov has a close relationship with Inazuma, who possesses the Choki Choki no Mi Devil Fruit power. Inazuma serves as Ivankov’s deputy and is one of the Revolutionary Army commanders stationed in the Grand Line, alongside Morley, Belo Betty, Karasu, and Lindbergh, who each oversee different regions.
Considered a High-Risk Ally
During the Marineford War, Luffy was completely drained while fighting the Navy forces. Fortunately, Ivankov assisted him by injecting hormones to boost his adrenaline. However, Ivankov’s ability to manipulate adrenaline comes with significant risks to the recipient's health.
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Deceiving Sanji’s Woman Radar
Sanji is highly perceptive when it comes to women, but Ivankov managed to fool him. Using his Devil Fruit ability to manipulate hormones, Ivankov transformed into a perfect female form, successfully tricking Sanji into believing he was genuinely a woman.