User blog comment:Diego Brando/JoJo' Bizzarre Adventure All Star Battle- More then 50 characters?/@comment-71.242.119.2-20121220171725/@comment-4010045-20121220221649

J.Geil has been confirmed as Hol Horse's partner.

As you said, Kira and Akira are the most likely for part 4. The real question who are they going to put as a minor antagonist for part 6. I have no idea.