Bobbi
Notice I said save. Not restore. I'd consider someone staking me if I got turned, saving me.
If I'd run into Dimitri on a patrol, I'd have killed him, or tried to. Because I'd never have been able to capture him on my own. And I'm the freaking slayer.
Problem was, that he evaded a lot of us for a long time before we ever had a chance to try and kill him.