Combo Master can be unlocked through Survival mode, Bardock's War. #17's Scarf can be unlocked through Disc Fusion, Budokai Tenkaichi 1. Medical Machine can be unlocked through Disc Fusion, Budokai Tenkaichi 2. #18's Kiss can (supposedly) be unlocked through Sim Dragon, though I somehow managed to get it without beating it. There are, of course, a few more that I don't know of, but these are... well, the ones I do know of. Hope this helps. The Great & Powerful Nominrath
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unlock him stupid!
finish the gt saga in dragon history
go to the date center and type the passwords...
Best place for this answer would be to go to IGN or Gamefaqs
This how you unlock king cold in dragon ball z budokai tenkaichi , beat cell games in 3 star difficulty.