from the series dragon ball z kai. Just going to point out im in in the cell saga, not still stuck at the freeza saga.
Goku is a very kind person who always puts his friends in front of himself. He is also very determinded and will never stop trying to get stronger.
Freeza (who actually dies later in the series but we will assume this rp took place before that death happened ) is a heartless ruthless creature who likes to brag but can also walk the walk as well. He changes form a total of 7 times, and each time he uses a bigger percent (for example in his first form he only uses 10th of his power and at his 4th form he uses half etc etc).
All goku has is the abilities he has learned from king kai including the kio ken and spirt bomb. He also can level into a new state called super saiyen. in this state he is way more awesomer and stuff. (more powerfull, quicker, etc. etc.)
Freeza has only his bare stength for forms 1-5 and 7 but in his 6th form he has huge deadly horns.
Goku crash landed in a pod on earth after freeza blew up his planet and his parents sent him away in it. Ever since he has learned to love earth and use his powers to protect it. He finds many enemys but seems to always overcome the challenge.
No real backround is revealed for freeza other than he is the son of king cold and he blew up goku's homeworld.
By the way, BANANA FONE!