Frieza

Frieza is an evil being, who was the strongest being in the universe. His rece is unknown.He had many servants from all over the universe,who all were afraid of his power.He conquered many planets,and killed many innocent beings to make him the ruler of the galaxy.The saiyans worked very well for him,until he got afraid of their power,so he blew up the entire planet of the saiyans.In Namek saga, he and his force came to Namek to find the dragon balls,so frieza can be immortal.In the Frieza saga, frieza released all his hidden strenght to fight the warriors.He killed Vegeta,who served him since he was a child.Bofore Vegeta died,Goku arrived and Vegeta told him about how frieza destroyed their Saiyan race.Goku promised that Frieza will pay for all the Saiyans and other beings that he killed.Goku and Frieza began to fight in the final battle between the Saiyans and Frieza. Frieza was too strong even for Goku.The battle was long,and when all the warriors were sure that Frieza was killed by Goku's spirit bomb,Frieza returned, and killed Krilin.Goku's rage and anger towards Frieza made him a super saiyan.Super saiyan Goku surpassed all of Frieza's power.The legendary Super Saiyan was the warrior that Frieza feared of him all his life.He heared tales about the legendary Saiyan,and when the Saiyans got stronger,he feared that one of them will turn to Super Saiyan and destroy him,so he blew they Saiyan rece.Frieza saw that Goku stronger that him so he destroyed planet Namek.He said that the planet will explode in a few minutes and he will survive in space but Goku couldn't.In the end,Frieza's body was cut to pieces by his own attack.He begged Goku to give him some energy,and Goku's mercy let him to do it.Goku escaped Namek just a few seconds before it exploded.He didn't knew that Frieza managed to survive too.After a year,Frieza came to earth with his father for revenge.Scientists built for Frieza cybernetic body to complete his missing organs.He and his father were killed by Future Trunks.