Devil Fruit powers are, like many aspects of One Piece, as existent outside the canon as within. These non-canonical abilities vary significantly in terms of exact ability from their canon counterparts, but there is occasionally some overlap between the two. The Batto Batto no Mi, Model: Vampire debuted in the non-canonical video game, One Piece: Unlimited World Red. Later, a non-mythical counterpart debuted in the series proper as Stussy’s Devil Fruit.
Shiki, a canon, but for the moment, minor character in the proper series, also appears as the main antagonist in the non-canon film, Strong World. Oda has admitted that, due to making Shiki canon, his overpowered Fuwa Fuwa no Mi also exists in a canon context. With this overlap between canon and non-canon kept in mind, these are some Devil Fruits that would be excellent in canon, whether adapted or carried wholesale.
1 Mini Mini no Mi
A Shrinking Devil Fruit
- User(s): Lily Enstomach and Blyue
- Appears in Z’s Ambition Arc (2012) and Round the Land (2004)
The Mini Mini no Mi has had two appearances in largely unrelated One Piece media, both times having been used by a giant. In the Japan-only video game, Round the Land, Blyue originates the Devil Fruit. In the filler arc promoting One Piece Film: Z, it is instead used by Lily Enstomach. Perhaps due to the power they were given, both of these giants have the odd quirk of being proportioned normally, as opposed to many canon giants, who often have enlarged heads, limbs, or other body parts that are noticeably bigger than the rest of their body. The user’s new «default» size is fairly small, but they can shift between their previous height and many smaller ones. With its users being giants, their massive physical strength is maintained in the smaller, potentially stealthier forms that maintain their massive physical strength. Additionally, they could alter the size of items they equipped, which would grow or shrink alongside them. This was notably used by Lily Enstomach to shift in size with her preferred weapon, a fork.
With the inclusion of buccaneers (albeit with the apparent caveat that they are near extinction), this power could serve as a way to disguise one such being, shrinking them to a smaller height as well as having other practical uses for users of any size. However, its continual inclusion in non-canonical media seems to point to it remaining separate from the series.
2 Inu Inu no Mi, Model: Bake-danuki
A Devil Fruit That Leaves No Room For Error
- User: Pato
- Appears in Unlimited World Red (2013)
Pato is a sentient pen, being one of a few non-canonical inanimate object Zoans in the series. His powers are derived from the Bake-danuki, a yokai based on the tanuki. His strongest asset is the ability to transform leaves into anything, including environments, pirates, and even random attacks. As a pen, he seems to operate by writing the intended transformation onto the leaf, leading it to be a virtual clone of the existing entity. However, these leaf clones are always notably inferior in power to their original counterparts and have a history of being turned against their creator in various ways.
While the actual power would have to be reined in somewhat within a canon context, even an inferior version of the leaf transformation abilities could have some utility as a potentially lethal ability. That said, like the Batto Batto no Mi, Model: Vampire (also from Unlimited World Red and coincidentally eaten by Pato’s master), a non-mythical canon counterpart to the ability exists, with Kozuki Sukiyaki’s teapot, Bunbuku, becoming a tanuki upon «eating» it. Due to being based around a real-life animal rather than a yokai, Bunbuku is little more than a common pet after the transformation. Coincidentally, Pato and Bunbuku are the sole two inanimate object zoans known thus far to not be weapons before their transformation.
3 Moa Moa no Mi
An Impactful Devil Fruit
- User: Byrnndi World
- Appears in 3D2Y: Overcome Ace’s Death! Luffy’s Vow to his Friends
Some Devil Fruit powers are quite literally too good for the canon. Often due to being ill-defined in terms of weaknesses and not given significant limits in terms of strength, these abilities, quite literally, are only viable in a non-canonical context. That said, such abilities still often receive refined counterparts within the canon, whether they predate them or debut after. Douglas Bullet’s Gasha Gasha no Mi, for example, can be identified as an overpowered version of Eustass Kid’s Jiki Jiki no Mi, due to both powers involving destruction, rebuilding, and creation.
However, the Moa Moa no Mi has no such counterpart, even though the potential is definitely there. This impossibly good Devil Fruit allows the user to both grow objects in size and increase their speed. This can lead to cannonballs that are large enough to wipe out islands, going at incredibly fast speeds. With the fairly high threshold for the limits of the power, which can make things 100 times the size and speed of their counterparts, a canon version would likely need to rein in the maximum potential this yields. That said, even if the limit for size and speed was shrunk down to a mere five or ten times the original amount, it would still be an incredible power within the canon. That being said, a non-combat ability similar to the Moa Moa no Mi has recently reared its head in canon. The Iku Iku no Mi, eaten by Biblo, the giant owl, allows objects to grow larger for the benefit of giants. As Biblo is a librarian, this has only been seen being used for books in their archives, rather than serving any combat purposes at present.
4 Raki Raki no Mi
A Luck-Sapping Devil Fruit
- User(s): Baccarat
- Appears in Film: Gold (2016)
One Piece Film: Gold featured the Straw Hat Pirates traveling to a seasteading casino known as Gran Tesoro, which made heavy use of debtors’ labor. This was, at least in part, accomplished by the Raki Raki no Mi, a Devil Fruit wielded by one concierge, Baccarat, who placed her bare hand on victims to siphon their luck for herself. In the context of the various gambling venues present aboard the ship, this meant that continually lucky gamblers could quickly find themselves in dire financial straits. Despite not being shown as a particularly strong fighter, Baccarat’s immense luck in combat allows her to withstand almost any attack against her. Usopp exploited this reliance by launching a slot machine at her, which ended up giving her a jackpot. He then quickly knocked her out with a well-placed attack before she could stockpile more luck.
The film primarily uses this Devil Fruit power for comedy, with a lot of the bad luck most of Baccarat’s victims receive being slapstick injuries or, in extreme cases, implied deaths. Yet this eludes potentially greater implications such a power could end up having in the canon story. Luck is an underrated factor in the series, one that truly helps in separating the greatest pirate crews from their counterparts. Without luck, pirate crews, including virtually all the current Emperor-affiliated ones, would be dead several times over. A character with the power to siphon immense luck from power players such as Buggy, who seemingly relies almost exclusively on it in his continual upward fall, would be something of a game-changer.
5 Goru Goru no Mi
A Golden Devil Fruit
- User(s): Gild Tesoro
- Appears in Film: Gold (2016)
Gild Tesoro is the proprietor of the eponymous Gran Tesoro. Due to his traumatic past, particularly a flashpoint where he failed to purchase his lover, Stella, to free her from slavery, he became obsessed with signifiers of wealth and control. As perhaps a microcosm of his character, Tesoro’s ship is full of gold, which he can manipulate through his Devil Fruit, the Goru Goru no Mi, provided he has already touched it beforehand. This can be used to physically augment his power by coating his body in gold or to physically restrain others by coating them in gold. It also acts as something of a security system, as Tesoro can sense attempted attacks on his ship through contact with the copious amounts of gold inside it.
While Tesoro and his greater operation may not fit as neatly into the canon story, his power perhaps showcases many of its relevant themes. Especially with Celestial Dragons, whom Tesoro is frequently compared to, wealth, power, and the ability to abuse others are all thematically connected. A character who can control others with a representation of their wealth, perhaps a member of God’s Knights or something similar, would be a fitting antagonist for this point in the series, where most villains are deeply connected and have long-reaching consequences connected to their authority.
