Nigrissi
Nigrissi was a powerful warrior from the planet Vegeta who was killed by Frieza during the genocide of the Saiyans. However, his body was later recovered by the Galactic Patrol and brought to Earth, where it was rebuilt into a cyborg by Dr. Gero. Nigrissi was then reprogrammed to serve as one of Gero's androids, and he was given the name "Nigrissi".
Nigrissi was one of the strongest of Gero's androids, and he was eventually sent to Earth to destroy Goku and his friends. However, Nigrissi was defeated by Vegeta, and he was eventually killed by Trunks.
Despite his short time on Earth, Nigrissi made a big impact on the story of Dragon Ball Super. He was a powerful and dangerous opponent, and his death was a major turning point in the series.