Usopp mengembangkan senjata ini beberapa waktu sebelum tiba di Enies Lobby, menggunakan Dial yang diperolehnya di Skypiea. Ini adalah alat logam hijau yang terlihat seperti persilangan antara tongkat dan ketapel. Tampaknya dinamai berdasarkan kumbang dengan nama yang sama karena kemiripannya dengan tanduk kumbang. Ini pertama kali terlihat di akhir Episode 274 di anime, tetapi tidak diberi penjelasan apa pun sampai Episode 278. Usopp mengungkapkan senjata ini ketika dia diminta oleh Luffy untuk membakar bendera Pemerintah Dunia.[2]
Senjata ini beberapa kali lebih kuat daripada ketapel lamanya, mampu menembak lebih cepat, lebih jauh, dan lebih akurat. Hal ini ditunjukkan sepenuhnya ketika, berdiri di atas Menara Keadilan, ia menembak jatuh Spandam dan beberapa Marinir di Jembatan Keraguan tanpa meleset sedikit pun; senapan Marinir tidak mampu menembak sejauh itu, apalagi mengenainya.[3]
Efektivitas Kabuto berkat desainnya, dengan lima cabang yang membantu stabilitas dan jangkauannya. Breath Dial yang terpasang di dalamnya juga memberikannya kekuatan lebih. Saat Usopp menembak, Dial aktif dan memberikan putaran pada tembakan bola dari Kabuto. Jika Dial yang terpasang diganti, tembakan bola akan menjadi lebih kuat.[4] Menjelang akhir kejadian di Enies Lobby, Usopp mencoba menjelaskan cara kerja Kabuto kepada Zoro dan Sanji namun dipotong pendek.[5] Dia kemudian menjelaskannya kepada Perona saat dia melawannya.
Usopp diperlihatkan menggunakan senjata ini secara efektif dengan rekan-rekannya dan gudang senjata lamanya setelah arc Enies Lobby, tetapi tidak terlihat lagi sejak time skip dua tahun, di mana senjata ini ditingkatkan dan/atau digantikan oleh Kuro Kabuto.
Attacks
The following techniques are those he can do with this weapon. As can be seen, several of these techniques are actually upgraded versions of those he can do with his slingshot.
Fire Bird Star
Hi no Tori Boshi/Fire Bird Star (火の鳥星/火の鳥星,Hi no Tori Boshi/Faiyā Bādo Sutā?, literally meaning "Fire Bird Star"): Usopp fires what can be assumed to be a very strong Kaen Boshi in the shape of a massive phoenix. It also seems to summon a massive ring of fire once it makes contact. This was first shown when he burnt the World Government flag on top of the Tower of Justice.[2][6] This is called Fire Bird Star and sometimes Phoenix Star in the English versions.
Himawari Boshi (向日葵星,Himawari Boshi?, literally meaning "Sunflower Star"): Five Kayaku Boshi are shot at the same time in a pentagon pattern. This was first seen being used against Jabra.[7] In the VIZ manga and Funimation dub, this is called Sunflower Star.
Cho Kemuri Boshi (超煙星,Chō Kemuri Boshi?, literally meaning "Super Smoke Star"): An upgraded version of the Kemuri Boshi, Usopp fires a pellet that spews smoke over a great distance, creating an enormous smokescreen. This was first used in order to blind some Marines that were trying to destroy the Going Merry.[8] This is called Special Attack: Super Smoke Star in the Funimation dub.
Rokuren Mamushi Boshi (六連蝮星,Rokuren Mamushi Boshi?, literally meaning "Six Chamber Pit-Viper Star"): Six Kayaku Boshi are shot at the same time in a snake-like pattern at an enemy. This was first seen being used against Absalom as he was taking away Nami.[9] In the VIZ manga and Funimation dub, this is called Viper Six Star and Six Chamber Viper Star in the Funimation subs.
Salt Star
En Boshi (塩星,En Boshi?, literally meaning "Salt Star"): Knowing salt to be the weakness of the zombies of Thriller Bark, Usopp launches pellets filled with it into their mouths. It can also be used to blind an opponent. This was first used against some zombies that were trying to capture Zoro, Sanji, and Franky.[10] The pellets can also be shot at high speed, called Gatling Salt Star in the Funimation dub and Wild Shot: Salt Star in the subs.
Ageha Ryusei (アゲハ流星,Ageha Ryūsei?, literally meaning "Swallowtail Butterfly Meteor"): Usopp shoots a high-speed Kayaku Boshi the size of a golf ball with a tail of smoke. This was first used against Perona.[11] In the VIZ manga and Funimation dub, this is called Butterfly Meteor and Swallowtail Meteor in the Funimation subs.
Kamakiri Ryūsei (カマキリ流星,Kamakiri Ryūsei?, literally meaning "Praying Mantis Meteor"): Usopp shoots a high-speed Kayaku Boshi in an upward arc that erupts in a green explosion. This was first used against Perona.[11] In the VIZ manga and Funimation dub, this is called Mantis Meteor.
Atlas Suisei (アトラス彗星,Atlas Suisei?, literally meaning "Atlas Comet"): Usopp shoots four high-speed Kayaku Boshi with smoke tails which converge together and hit a target. The arcs the four shots make resemble the horns of an Atlas Beetle. This was first seen being used on a wall to reveal the room containing Perona's real body.[12] In the VIZ manga and Funimation subs, this is called Atlas Comet.
Torimochi Boshi (トリモチ星,Torimochi Boshi?, literally meaning "Sticky Star"): Usopp fires a high-speed pellet containing a sticky substance with a smoke tail at an enemy in order to immobilize them. This was first seen being used against Perona under the false name Daibakuhatsu Boshi (大爆発星,Daibakuhatsu Boshi?, literally meaning "Huge Explosion Star") in order to fool her.[13] In the VIZ manga and Funimation dub, this is called Sticky Star and Birdlime Star in the Funimation subs. The fake name in the VIZ manga and Funimation dub is Big Bang Star.
Gokiburi Boshi (ゴキブリ星,Gokiburi Boshi?, literally meaning "Cockroach Star"): Usopp fires a gigantic pellet the size of a bowling ball towards an enemy at high speeds. The pellet then releases plastic cockroaches. Though not real, the cockroaches deliver a psychological attack to an enemy rather than a physical one. This was first seen being used to scare Perona and was disguised by Usopp calling it Kurobikari Boshi (黒光り星,Kurobikaru Boshi?, literally meaning "Sparkling Black Star") In the anime, the roaches are depicted as also being mechanical and capable of movement.[13] In the VIZ manga and Funimation dub, this is called Roach Star and Cockroach Star in the Funimation subs. The fake name in the VIZ manga and Funimation dub is Shiny Black Star and Shining Black Star in the Funimation subs.
Tokuyo Abura Boshi (特用油星,Tokuyō Abura Boshi?, literally meaning "Special Oil Star"): Usopp shoots three pellets containing his "special oil" to cause an opponent to slip. This was first seen being used to make Oars' hand slip.[14]
Super Size Hi no Tori Boshi (スーパーサイズ火の鳥星,Sūpā Saizu Hi no Tori Boshi?, literally meaning "Super Size Fire Bird Star"): Usopp first fires one of his Tokuyō Abura Boshi at an opponent. As it flies towards the opponent, Franky ignites it with Fresh Fire. The result is a giant version of Usopp's Fire Bird Star. This was first seen being used against Oars and Moria.[15]
Anime-Only Attacks
Kaenbin, Gas, Kaki, Yamai, to Kagero Ryusei (火炎瓶, ガス, 垣, 矢枚 と 影蝋流星,Kaenbin, Gasu, Kaki, Yamai, to Kagerō Ryūsei?, literally meaning "Fire Flame Bottle, Gas, Hedge, Arrow Piece, and Shadow Wax Meteor"): Several anime exclusive techniques that Usopp used against Perona. Usopp fires several shots that explode in different colors. Due to the nature of the scene which showed the techniques, they were fired in a way in which it is hard distinguish one from another. Apart from differently colored explosions that cannot easily be traced to the technique they correspond to, they look basically the same.[16] In the Funimation dub, this is called Molotov Cocktail, Gas, Barrier, Butterfly Arrow, Blazing Meteor.
Renpatsu Kaen Boshi (連発火炎星,Renpatsu Kaen Boshi?, literally meaning "Multiple Fire Flame Stars"): Usopp shoots several Kaen Boshi at once. This was first seen to knock out several of Shiki's men.[17] In the Funimation subs, this is called Multiple Flame Stars and simply Flame Stars in the dub.
Tenryu Boshi (天竜星,Tenryū Boshi?, literally meaning "Heaven Dragon Star"): Usopp shoots a large burst of lightning that takes the form of a dragon. This attack seems to be one of the most powerful Usopp has, even more powerful than his Hi no Tori Boshi attack. This was first seen being used against Shiki, but he dodged it. However, it would later trigger the lightning for Luffy's Giant Thor Axe.[17] In the Funimation dub, this is called Sky Dragon Star.
