Nail

From Dragon Ball - Wiki on Neoseeker

Nail

Nail is a fictional character from Dragonball Z. He is a Namekian Warrior who looks exactly like Piccolo, apart from the clothes. He is one of the few Warrior Namekians left. He is also Guru's Bodyguard.

During the Frieza Saga, Nail has to fight Frieza in order to stop him from getting the Dragon Balls for himself. Even though Frieza was in his lowest power level, Nail was defeated by him. Nail tells Frieza that their Battle was just to delay him from getting them. Frieza then leaves Nail to die.

Shortly afterwards a newly resurrected Piccolo Jr. arrives and finds the defeated Namekian. Nail is still able to speak, and asks Piccolo to fuse with him. Piccolo agrees, but is skeptical of Nail's motives. Piccolo's Power Increases Dramatically after fusing with Nail, allowing him to fight Frieza's Second form on equal terms.