Usopp is, as we know, one of the main members of Luffy's Straw Hat Pirates in One Piece. He's not much of a fighter, but Usopp is undoubtedly the most talented engineer in the group, and without his inventions and understanding of a range of various technical and scientific concepts, the Straw Hats wouldn't have been as successful as they were in the end. Usopp invented or modified many things, and in this article, we'll talk about his inventions.

This article will be a list of Usopp's various inventions, as they will be ranked according to their importance to him and his crew. We will first explain his engineering skills, then move on to the individual known inventions as we rank them and provide you with some details on each one. The purpose of this list is to give you a glimpse into Usopp's genius and show you how creative he is, as many fans forget this because Usopp is usually comic relief in the story, so his true contributions are often overlooked.

Usopp is a truly gifted engineer

Of the crew, Usopp is the one with the most technical skills, along with Franky. He understands the tunnel system created by Miss Merry Christmas and uses it to his advantage. He is responsible for almost all of Nami's weapons, primarily the Clima-Tact. He could also use Weatheria's technology, which he only knew about thanks to Nami, to create the Perfect Clima-Tact. He also enhanced his Kabuto via Dials or Pop Green. He can create various weapons he calls "stars," which can launch shurikens, Tabasco balls, fire balls, and other objects.

Against Caesar Clown, he proved astute, realizing that he would explode if exposed to fire due to his Logia powers. This was proof that he also possessed exceptional knowledge of chemistry.

Usopp was the Going Merry's carpenter and chief repairman, though he had no experience in the field because no one else could handle it. He often concocted makeshift solutions to the Merry's damage, with enough persistence that the Merry's Klabautermann even showed up to help him.

When Franky joined the crew, Usopp became Franky's assistant, as Franky had much more experience in that field. In return, Franky reserved a spot on the ship where Usopp could work on making gadgets, which was more his thing, earning him praise from Franky. Usopp is the crew's gunner and knows how to use the Going Merry's cannons and the Thousand Sunny's forward cannon by default. He has also invented many weapons.

Usopp's Inventions, Ranked by Importance

There is no official list of all of Usopp's inventions, as Oda or anyone else never kept track of them. Because of this, this list may be incomplete, but it will contain all of Usopp's inventions found in the manga and anime, ranked by their importance in the series.

20. Tiger Taru

The Taru Tiger is the name of a small boat used by Nami, Usopp, and Robin during the Davy Back Fight Donut Race. The Taru Tiger consists of three barrels and is equipped with two oars. The boat was built by Usopp with three barrels provided by the Foxy Pirates and is made from materials approved for racing. It had absolutely no other use in the series.

19. Tokudai Reitoko no Cho Tei’on Reiki Ho

A large house created in the depths of Moria's refrigerator, which Usopp built with Franky's help. Aside from being a house, it doesn't seem to have much practical use.

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18. Usopp Skyrider (non-canon)

The Usopp Skyrider is a small parachute that Usopp can use to save himself if he ends up falling from a certain height. Does it work? The parachute is about the size of a regular plate, so it can't support Usopp's weight, rendering it completely useless and nearly killing Usopp.

17. Usopp Boomerang (non-canon)

The Usopp Boomerang is a special boomerang seen in the movie The Kingdom of Strange Animals. It can be folded into itself, and while it's essentially meant to be a normal boomerang, it has one major flaw: once thrown, it doesn't return, so it's technically not a boomerang.

16. Usopp jumps

Usopp has invented a special type of spring that he attaches to his shoes and can then use to jump and reach great heights. But Usopp must be careful to land on his feet, as the invention is useless if he can't.

15. Usopp AAAaaAAAAaaAA!

It's actually a special belt with a grappling hook that Usopp uses to hold onto objects; its name is a reference to Tarzan. It's unknown how or when he made it, but we do know that he forgot to install a mechanism to detach the rope.

14. Octopakutsu

These are special shoes inspired by an octopus. They have suction cups, so Usopp can use them to climb vertical walls or other similar objects, thus avoiding gravity.

13. Salt ball fired by zombies

These are small balls of salt that Usopp invented in Thriller Bark, when it was revealed that the zombies there were weak to salt. He keeps them in bags and can also use them with his slingshots.

12. Usopp's Hammer

The Usopp Hammer is a weapon created by Usopp. It's just the hammer he used to repair the Going Merry, but he'll use it in battle if necessary. After setting Chew on fire with a Hissatsu Kaen Boshi, he knocked him down with this hammer.

He then hit him several times. In the fight against the Baroque Works agents, he also used this hammer for the Hissatsu Usotcho Hammer Suisei, a joint attack by Usopp and Tony Tony Chopper, in which they take one of Usopp's hammers and throw it at the opponent with a rubber band attached to Chopper's horns.

11. Kaen Dama

Likely due to his expertise in chemistry, Kaen Dama is a small ball that explodes and creates a small flame upon impact. If he then pours oil on it, it reacts and creates a small wall of fire known as the Kokkara Koko Made Hairu na no Jutsu.

10. Usopp Book

The Usopp Pound is one of Usopp's weapons, or rather a dummy supposedly weighing five tons (a lie), which he uses in battles with Mr. 4 and Miss Merry Christmas, apparently finishing Mr. 4 off with it. The weapon is constructed from two pans attached to a long stick.

To top it all off, the hammer has been given a black overlay and faux lettering to create the perfect illusion. In reality, the hammer weighs only two kilograms. Against Perona, he uses the later development called Usopp Golden Pound.

9. Usopp's Guestbook

The Usopp Golden Pound, like the Usopp Pound, is nothing more than a fake hammer. It carries the deceptive weight of 10 tons, but it is actually just a ball meant to scare Usopp's opponents. This also works against Perona, who faints with this attack in combination with Hissatsu Gokiburi Boshi.

8. Use a 100-ton hammer

Usopp's 100-ton hammer was first seen in the One Piece: Z movie. Usopp uses a variation of his Pound attack, which is said to hit the opponent with a force equal to 100 tons (a lie).

7. Kabuto

Kabuto is the slingshot that Usopp first uses in his Sogeking disguise in Enie Hall. After Usopp joins the Mugiwara Pirate Gang, he eventually uses the weapon even without his mask. Unlike Usopp's previous slingshot, Kabuto has a long holding rod, increasing the weapon's stability. The fork now has a circular shape that opens upwards and has five straps attached to it.

6. Climate-Tact

The Clima-Tact is the first reinforced version of the staff Nami previously used. It was invented by Usopp and resembles a staff that can be divided into three parts. However, the sniper misunderstood Nami's wishes and installed numerous functions to perform magic tricks, much to the navigator's frustration. Each of the three parts is capable of generating spheres with different properties: Heat Ball, Cold Ball, and Thunder Ball.

5. Dials

Dials are objects that resemble shells but have the ability to hold large amounts of energy and matter, like natural elements. Although they are native to Skypiea, some of them can be found elsewhere. The dials used by Usopp are:

• The Breath Dial produces a blast of wind; larger ones can be used to move vehicles; it can also contain any gas that can be used as fuel.
• The flash dial works like the lamp dial; however, all the light is emitted in an instant, causing a blinding flash.
• The Flavor Dial can store odors and aromas, but also various other gases, such as flammable and explosive gases.
• The Impact Dial can absorb the force of a blow or impact and release all of the energy later in a very powerful jet. Primarily used for combat, it is placed on the palm of the hand and strapped to it. However, the user feels a portion of the released blow and pain in the arm based on the resistance.
• The Tone Dial, also known as the TD, can record sounds and play them back later. During this time, the best versions were developed and selected. They are sold in pairs so you can listen to music with headphones or a special player.

4. Perfect Climate-Tact

The Perfect Clima-Tact is introduced when Nami and the rest of the crew attempt to reach Puffing Tom with Rocket Man. Each of the three parts has a sphere at its end containing a dial, obtained from Usopp at the end of the Skypiea Saga.

All attacks that can be performed are much more powerful than before, and there is no indication that these are useless features. There are, however, some drawbacks, the main one being that if this weapon is not used with great care, it can cause collateral damage.

3. Green Pops

Pop Greens are special seeds from various aggressive plants found in the Boin Archipelago. In a matter of seconds, they can grow into enormous plants. They were first used as a weapon by Hercules, who taught Usopp how to use them during his two-year training; he now throws them with the Black Kabuto.

It's unclear exactly what causes different seeds to turn into adult plants, but the reasons vary from species to species. Technically, this isn't Usopp's original invention, but he did give these seeds a completely new role, which is why we've added them here.

2. Clima-Tact Witchcraft

The Sorcery Clima Takt first appears when Nami uses it against the fake Straw Hat Pirates. When the three parts are connected, it is much longer than the previous version, and Nami, when not in use, disassembles it and wears it hanging from her belt. It has a standard form, a Grow Up form, and the current form, which she combined with Zeus.

1. Kuro Kabuto

Usopp uses the Kuro Kaburo as a slingshot after the time skip. Usopp worked on its development for two years. When Usopp fights the guards of Ryugu Palace, it is first properly identified and given its name. It is identically designed and has the same features as the previous Kabuto and is only slightly larger than his previous slingshot, the Ginga Pachinko, at least in its basic form.

He is also more portable than the previous Kabuto. He can use attacks from his previous arsenal, though he primarily uses them with his Pop Greens and other new techniques.