Now that Lucifer has come and gone, Castiel is heading into Supernatural season 12 “closer to full power than we have seen him, I would say, in years,” Misha Collins tells EW. And when it comes to the impending search to find Lucifer — which we know will involve a Castiel-Crowley team-up — Collins says Cas is “coming out swinging.”

Although Cas still doesn’t have his wings back, Collins says he’s otherwise at full strength. The downside to all that power? Mood swings. “He’s a little bit of a jerk,” Collins says, calling Castiel “short-tempered,” which should make for some memorable moments when paired with Crowley.

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Additionally, Collins says fans don’t need to worry about any lingering effects from Lucifer’s stay in Castiel’s vessel. As he puts it, there are “no vestiges of Lucifer there, other than Castiel being left more pissed off than he was before.”