Dragon Ball Z: Ultimate Tenkaichi question?

Just a quick question about the game, regarding Hero mode. I've already unlocked my character's Super Saiyan form, but can he go further than that eventually? I've read in some places that they can, and some places say they can't. I want the absolute truth, no BS, no speculation, perhaps someone who has played through it. Can you be Super Saiyan 3 or 4 with your created character? If not, then why give them the ability to have a tail, or even the ability to transform to the first stage in the first place? Thanks.