Piscis Arapaima (ピスキス・アラパイマ Pisukisu Arapaima, 29): Carries a trident named Neptune's Fork (海神の叉 Kaijin no Sa). His first victim was the Mirage Bar's owner, Minoru Sano also known as Isamu Takagi of the Phantom Thieve brothers. As a result, Arapaima was also after Isamu's younger brother/partner, Akira Takagi, who was three days away from taking advantage of the stature of limitations to get the loot he and his brother stole seven years ago. After Akira was finally arrested, Arapaima attacked, forced to fight Agito and G3-X, knocked in midair by Agito Ground Form's Rider Kick so he could be destroyed by the GX Launcher.