Surrounded by an enthusiastic audience, Corden and Hathaway took turns slinging verses in this surprisingly biting installment of "Drop the Mic," and the British entertainer didn't go easy on his opponent and came out swinging.
"I admit that Anne is both talented and sweet, and it's hard to say anything about her that's mean, but I'm gonna try my best and air it out like tank tops, and like her movie Get Smart, her rhymes are gonna flop," he rapped.
Corden dinged the Oscar winner as he closed his opening set, rapping, "Now it's her turn to try and act a little scary, 'cause the only Catwoman I acknowledge is Halle Berry."
"A Catwoman woman diss? Gosh, what do I do? I can't make fun of you James, 'cause no one's heard of you," Hathaway responded, getting up in Corden's face. "Now that I finally have a chance to speak, I saw your rhymes are like your ratings, damn, they're incredibly weak."
Cutting deep, Hathaway made things personal, telling Corden, "I'm like your wife: I watch Seth Meyers instead."
The Les Miserables star and the host went at the battle hard, with Corden continuing to mock Hathaway's "awful" British accent and her ill-fated Academy Awards hosting gig in 2011. The 33-year-old actress came struck back viciously, mocking Corden's One Direction obsession and even his weight.
However, when it came right down to it, no matter what Corden threw at her, Hathaway's final verse explained why he never had a chance. The actress rapped, "I heard everything man, and none of it broke me," referring to the years she's spent dealing with her so-called Hathahaters. "I battle with love and joy, so I am always unafraid. But son, now you know how it feels to get Hatha-slayed."
By a round of applause, the Alice Through the Looking Glass star won handily, and the two hugged it out as the show went to commercial.
Now that Carpool Karaoke has skyrocketed in popularity, this installment of "Drop the Mic" goes to show that Corden might have another brilliant segment that's full of potential for future mind-blowing showdowns.