To get Vegeta,Nappa,and Radiz play though the Sayian saga.To get Reacool,Captain Ginyu,and Frieza play though the Namekian saga.To get Trunks,Teen Gohan,Android 19,18,17,and Cell complete the Android saga.To get Hurcule complete the world tournament at novice level,and to get sayianman comple it at advanced level.