Rivet

Rivet (リベット, Ribetto) is a character appearing in Dragon Ball GT, a member of General Rildo's elite mercenary squad, the Sigma Force. He is an M2-type cyborg with the ability to move through walls, floors, and ceilings, and can break down into tiny particles. Additionally, Rivet can emit sleep gas that puts organic beings into a stunned state. He is loyal to General Rildo and Dr. Myu. Rivet usually collaborates with his teammates Nehji, Natt, and Bizu, with whom he can fuse to form Super Mega Cannon Sigma. Rivet participated in the mission to capture Goku and Trunks and acquired their battle data from Gill. Although he used this data to fight Goku, ultimately, the Sigma Force was defeated when Goku unleashed his true power. Rivet's name is derived from the English word "rivet."