The Dead or Alive 5 video you see embedded below introduces you to a couple of new fighters coming to the game, Bass and Rig.
Bass is a fan-favorite, but Rig is a new guy. A mysterious "fighter without a past." He favors a personalized style of taekwondo and is a "natural born fighter, learning from intuition and discipline"
Rig is named "Rig" because he was found on an oil Rig and can't remember anything, and Bass is named "Bass" because he is a fish*.
Check them both out in the Dead or Alive 5 video below:
*Bass not actually a fish.