Mera Mera no Mi

Overview
The Mera Mera no Mi is a Logia-type Devil Fruit that allows the user to create, control, and transform into fire at will. It was eaten by Sabo, and previously Portgas D. Ace.

Etymology

 * Meramera (メラメラ/めらめら?) is the Japanese onomatopoeia for something flaring up/bursting into flames.
 * It is called the Flame-Flame Fruit in the Viz Manga and FUNimation dub.
 * It is called the Flare-Flare Fruit in the 4Kids dub and FUNimation subs.

Appearence


The Mera Mera no Mi is a round orange fruit, composed of many flame-shaped components with swirl patterns on each one, and has a swirled stem on the top.

Strengths
When this power clashes against certain other Logia on equal grounds, this seems to come to a stalemate: neither smoke nor ice was able to overcome nor succumb to the flames, instead cancelling each other out when the two elements collide.

Weaknesses
The fruit's major strength, like other Logia types, is that it allows the user to produce as well as become the element they control. In this case, the user is able to create, control, and become fire. With this in mind, the user can create devastating fire-based attacks and gain a high resistance towards most heat-based attacks. The flames can also be used to increase the force of physical attacks. The user is also able to avoid normal physical attacks by turning into fire and allowing the attack to harmlessly pass through their fiery body. Igniting oneself also has the added effect of burning an opponent if he or she had tried to physically harm the user.

Ace D Portgas
The fruit's bestowed powers, as used by Ace, have been used in a variety of ways. Since he left home three years before Luffy, who did not know that Ace had powers before their reunion in Alabasta, Ace had his powers for no more than three years. Ace notably used his powers usually either to fight or to propel his raft. Ace shares Luffy's penchant for naming his techniques, with the only difference being that Luffy adds the phrase "Gomu Gomu No", followed by the specific name of the attack (usually inspired by a certain object or concept). Ace names his attacks in Japanese and they are often made of two-word phrases and are based on different mythologies.

According to Gatz, Ace had sunk countless battleships and burned down mighty cities with the fruit's power.

During Ace's cover story, the powers of the fruit allowed Ace to rescue a Marine officer and some documents on board a burning ship. Despite being weakened by the Yami Yami no Mi severely during his fight against Blackbeard, Ace was still able to skillfully use the fruit's power to inflict some damage to his former subordinate.