I obtained Yoda. Got him to Gear 8. Gear 9 will be a couple weeks away for the implant. I tried him out at 212 speed in arena around the 40 rank. His tenacity up made the victories against DN lead and EP lead teams very easy. But his health is so low that after all the AOE's were done, he was either dead or 1 shot. He never had more than 2 moves in a battle.
I will definitely get him to Gear 9, but until then he will be on the back burner simply because he has such low health.