Frieza is the main antagonist of the second and third seasons of Dragon Ball Z. According to the Dragon Ball Z website, Frieza is extremely ruthless and sadistic. He destroyed the entire planet of Vegeta using only one finger and eradicated most of the Saiyan race. He was also able to hold his own in a fight against Goku, even when Goku became a Super Saiyan. Frieza was killed by future Trunks in the fourth season.
Cell is the main antagonist of the fifth and sixth seasons of Dragon Ball Z. Cell was created by Dr. Gero and contains the DNA of many of the Z Fighters, including Goku, Vegeta, Piccolo and Krillin. In his perfect form he was easily able to defeat Vegeta, Goku and Trunks. Cell was defeated by Gohan after Gohan achieved the Super Saiyan 2 form.
In the 43rd episode of Dragon Ball GT, Goku is sent to the underworld and forced to fight against both Cell and Frieza. Goku defeats them in the next episode by freezing them solid and cracking the ice.
Since Cell and Frieza have never fought against one another in the series, a battle between them is open to speculation and debate.Learn more about Video & Online Games