Dragon Ball Z: Extreme Butoden's website has updated and has confirmed that Super Saiyan 4 Vegeta will be a Z-Assist (support) character. Vegeta will use his Final Shine Attack when summoned by the player.

In order to unlock him, players will need to have a save data of Dragon Ball Heroes: Ultimate Mission 2 on their 3DS.  Dragon Ball Z: Extreme Butoden will be released in Japan on the 3DS next month on June 11th.