What's your favorite dragon ball z character and two favorite characters from digimon?

i loved them programmes when i was a kid :) my fav from dragonballz was goku and gohan and some others and my fav from digimon was that boy with the spikey hair not sure if hes name was kai? and then the digimon which was like white with black stripes and a yellow horn on its head, cant remember what it was called.