According to AllGamesBeta, Pai Chan & Gen Fu will be characters in Tecmo's Dead or Alive 5. Pai Chan is from Virtua Fighter and Gen Fu of course is a frequent DOA series character.
Source: AllGamesBetaLabels: Consoles, Dead or Alive, Dead or Alive 5, Multi-Platform Podcast News, News, PlayStation, PlayStation 3, PS3, Tecmo, Top Posts, Xbox, Xbox 360