"I like you, Conan, but I'm going to whoop your ass."

With that, UFC fighter Conor McGregor laid down the gauntlet for a one-on-one UFC 2 matchup with Conan O'Brien for the latest installment of the late-night talk show host's Clueless Gamer segment.

Unlike previous installations of the segment, this one included Conan being able to play as himself, as EA Sports made him a custom character to match his likeness. And the end result is priceless, as it even got Conan's signature red mane down pat with precision, much to the delight of the host.

"Look at that body I've got," O'Brien said, in awe of his character in the game.

McGregor wasn't impressed.

"That's a weak midsection. That's a breadbasket, I call it," he said. "My foot is going straight into the breadbasket."

All set to tap their thumbs in a lightweight division bout, both had a good laugh watching Conan's character walk out to the Octagon, as the host joked about getting a "moisturizer" treatment before the fight began.

Once the bout started, Conan did his best to stay away from McGregor in the video game, even sneaking in a punch.

But that's about all the offense that O'Brien could muster, as McGregor landed a roundhouse kick before dropping Conan with a punch and putting a quick end to the fight with a ground-and-pound session until the host was knocked out cold ... just 47 seconds into the first round.

"What the hell was that? That was ridiculous," O'Brien shrieked. "I could take much more abuse than that. I've been married 14 years."

While this particular UFC 2 matchup was a bunch of laughs, you can really see the game's touted Knockout Physics System in full effect, as Conan's character eats every punch, kick and the overall brunt of McGregor's abuse. Adding to the hilarity of this video is McGregor teaching Conan some mixed martial arts (MMA) stances and moves.

The release of the game is just four days away now, as UFC 2 hits stores on Tuesday.

We wonder if this was shot before or after McGregor's loss to Nate Diaz.