User blog comment:Jojo-a-gogo/How many HXH characters do you think will be featured in Project Versus J?/@comment-2225197-20121220040959

The character's limitations would most likely be 3. More or less. Gon and Killua would definitely playable as fighters. Although I personally hope Kurapika  or Hisoka as fighters too. But like Jump Ultimate Stars, characters like Kurapika, Hisoka, or Leorio would most likely be support. Although I'm not sure if characters like Biscuit would appear in this game. So the characters from HxH to appear on the game would probably the important character (well, it's not like I think Biscuit and the others aren't important though).

Off Topic comment : The reason I waited for this game is because I wanted to play Gon or Killua. HxH has less games than the rest (if you know what I mean), even though it's popular.