Thread:SecondOpinion/@comment-28912449-20160731191243/@comment-24183810-20160802142934

Yes, though stages 3 and 6 are considered destined battles as well, though this doesn't apply in Team Arcade though.

Plus, if you meet certain conditions during Arcade, regardless in Single or Team version, you will have a Stage 9 where you must defeat the bonus bosses Siegmar Umbra, Kali Chrome or Kira Kamiya. In Team version, its all 3 of them.