In this tease for Sunday's premiere, however, he seems back to his old self. That is, he's no longer naked, drenched in plasma, and destroying everything around him.
Just because he looks and sounds like a southern gentleman, don't be fooled.
"I do not wish any of you harm," he drawls to Sookie (Anna Paquin) & Co. after Eric Northman (Alexander Skarsgård) attacks him. "But if you force me to defend myself again, you will be sorry."
But Billith is no more, he tells the Scooby gang.
"I am Bill Compton. Though clearly, I am something more. I see that now. I see everything so differently now."
What exactly is he? No one knows, but we have a feeling we won't be seeing Mr. Nice Guy again anytime soon.
True Blood returns Sunday, June 16 on HBO.