Not just a few, they are missing so many characters it is insane.
For some stupid ass reason there is only great ape baby vegeta, there is no other baby vegeta forms.
There is almost no characters from dragon ball.
There is no android 19, turles, they only have broly's legendary super saiyan form and none of his other forms, android 13, uub, janemba, future gohan, super saiyan 1 gogeta, majin vegeta, 1st and 2nd form cell, dabura, cooler, mecha frieza, pikkon, tapion, zarbon, dodoria, bojack, they only have regular super buu, lord slug. And MANY MANY more characters that I did not name.
There is just so many characters missing in the game which is pretty pathetic, especially because of the fact that those characters were in previous games...
I am not saying that this game is bad or anything, (i've had it for like a month now and I still have not gotten bored of it) but its just pretty sad/disappointing how they are missing so many characters.
They are also missing so many sagas too.