Description
Frieza (フリーザ) is the emperor of Universe 7, who controlled his own imperial army and is feared for his ruthlessness and power. He is the descendant of Chilled, the second son of King Cold and Queen Hail and the younger brother of Cooler.
Mecha Frieza (メカフリーザ), also referred to as Powered-Up Form in the manga, is Frieza rebuilt with cybernetic enhancements by scientists after what remained of the still-living Frieza was salvaged after being physically ruined while caught in Planet Namek's explosion. The whole of the lower half of his body, entire left arm, and right side of his face was replaced with scarring and metal accouterments covering what little was left of his organic self. These enhancements allowed him to exceed the limits imposed by his fully organic form, though by how much or in what way is unknown. It also was capable of generating bio-electricity, as red electrical bolts were seen emanating from him upon arrival at Earth. In the Funimation dub of Dragon Ball Z Kai, this form has a slight mechanical sound to his voice. Despite being outfitted with cybernetics, he is still susceptible to ki-sense unlike the Red Ribbon Army-created cyborgs/androids. In the anime it is said by King Kai that Mecha Frieza's Supernova is ten times stronger than the Death Ball Frieza used to destroy Namek.
Upon Future Trunks killing him, lacking a physical body, Frieza's spirit remains with the appearance of Mecha Frieza during his time in Hell until his resurrection in Dragon Ball Super Upon his revival, he is still Mecha Frieza (in pieces), however he is soon regenerated, regaining his full organic body.