Gohan = Nevanlinna - powerful, but more interested in nerd stuff
Trunks = Sarada/Ishtar's kid
Piccolo = Ochazuke - gruff, painfully honest, but cares deep down.
Krillin = ...Jack - was the first PC to die, will likely die several more times. Jack is also Yamcha in that his girlfriend got stolen from him.
Tenshinhan - ???