The Elbaph arc in One Piece is gradually revealing some of the darkest secrets in history, and a shocking detail has just come to light. Marshall D. Teach is not just an ambitious villain but also a survivor of the God Valley tragedy.
The event 56 years ago at Mary Geoise, where the Rocks Pirates clashed directly with Imu, is the key starting point for everything. With Eris and Teach saved by Kuma, it’s very likely she passed on knowledge of the supreme being Imu to her son.
Since then, Teach has spent his life building a “weapon arsenal” of Devil Fruits not to conquer the seas, but to carry out a devastating overthrow of the World Government.
Here’s an analysis of the five “strategic weapons” Blackbeard has carefully prepared:
1. Yami Yami no Mi

Blackbeard once said he would abandon all plans if he couldn’t find the Yami Yami fruit. Why would someone as arrogant as Teach depend so heavily on just one Devil Fruit? The answer lies in its “nullifying” power.
If Imu possesses an ancient form of “dark magic” or a divine energy beyond Devil Fruit rules, then the Yami Yami no Mi is the only tool that can bring Imu down to earth. Once Teach touches Imu, all healing privileges, space manipulation, or “soul contracts” between Imu and the Five Elders could collapse instantly.
2. Gura Gura no Mi

Many assume Teach stole the Tremor-Tremor fruit from Whitebeard just to boost his firepower. However, looking at Mary Geoise’s geography reveals a more sinister plan. The Holy Land of the Celestial Dragons sits atop the Red Line, a symbol of supremacy and completely isolated from rising sea levels.
With the Tremor-Tremor fruit’s power, Teach doesn’t need to lead troops up steep cliffs or use the vulnerable Bondola system. A single powerful punch could crack or collapse the Red Line’s foundation at Mary Geoise. When the tower falls, Imu and the nobles lose their final shield, forced to descend to the lower world they have oppressed for centuries.
3. Wapu Wapu no Mi (Van Augur)

Blackbeard’s hunt for the Teleportation fruit for sniper Van Augur is no coincidence. Mary Geoise is considered an impregnable fortress due to its height and the Holy Knights’ defenses. Conventional approaches are slow and easily intercepted.
But with the Wapu Wapu no Mi, Van Augur can teleport Blackbeard’s core crew past all physical barriers, appearing right in the heart of the Pangea Palace in an instant. This is the ultimate surprise factor, rendering Imu’s strongest defenses meaningless.
4. Inu Inu no Mi, Model Kyubi (Catarina Devon)

At Egghead, Catarina Devon’s strange action of touching the foot of the Five Elder Saturn raised many questions. In an empire built on absolute obedience, power comes with identity.
Imagine if Saturn suddenly appeared at key World Government facilities or ordered Navy Admirals to retreat. No one would dare question or resist a Five Elder. Devon doesn’t need to break the fortress from outside, she can open the gates from within, leading Teach straight to the empty throne.
5. Shima Shima no Mi (Avalo Pizarro)

Avalo Pizarro’s Shima Shima no Mi is often seen as an upgraded version of Pica, but its true power lies in scale. If Pizarro can merge with the Red Line, a massive geological structure, he becomes the “all-seeing eye” helping Teach pinpoint Imu’s secret hideout.
Beyond that, Pizarro can manipulate the Red Line’s cliffs to crush the Holy Knights or block Imu’s escape routes. Mary Geoise would no longer be a safe haven but a giant iron cage controlled by Blackbeard’s crew.
The only missing piece: Boa Hancock’s Mero Mero no Mi

An important detail is that Blackbeard once tried to steal Boa Hancock’s Mero Mero no Mi but failed due to Rayleigh’s intervention. Teach’s desire for this fruit isn’t about beauty but its absolute petrification effect.
In a battle against immortal beings with super regeneration like Imu and the Five Elders, physical damage seems useless. The only way to remove them from the game is to permanently seal their bodies. Petrification is the perfect finishing move: no cells to heal, no life to recover. Failing to obtain the Mero Mero no Mi might be the only flaw in Teach’s otherwise perfect battle plan so far.