All-Star Battle League

JoJo's Bizarre Adventure: All-Star Battle League (ジョジョの奇妙な冒険　オールスターバトル, JoJo no Kimyou na Bouken Ōru Sutā Batoru League) is a competition created in order to promote JoJo's Bizarre Adventure: All-Star Battle . It was announced on June 9, 2013 with the fifth trailer of the PS3 game. The event consist on a league with all the characters announced so far.

Cheer Campaign

People around the world can cheer for a particular character, making them reach the finals. The Finals will be broadcasted as an  1vs1 CPU battle to decide the winners

Reference:

http://spaghettimiles.tumblr.com/post/52529775349/jojos-bizarre-adventure-all-star-battle-league

Translated version of Rules:

http://spaghettimiles.tumblr.com/post/52607044023/translation-and-explanation-of-the-jjba-all-star