McCarthy's has intense gameday demeanor has been celebrated in Vikings postgame locker room videos and mocked on social media

Minnesota Vikings quarterback J.J. McCarthy divulged this week that an alter ego has been helping him succeed during his first season as a starting NFL QB.

The Minnesota Vikings have been warned that while JJ McCarthy is back, he may not be as good as some thought in a win over the Lions.

Minnesota Vikings QB JJ McCarthy reveals his intense “alter ego” named “Nine” that fuels his focus and game-day mindset.

Minnesota’s quarterback room consists of McCarthy, 22, rookie quarterback Max Brosmer, 24, and practice squad quarterback John Wolford, 30. That has inherently created a dynamic that has allowed everybody to feel like they’re on the same page.

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McCarthy’s calm demeanor disappears between the lines, replaced by an alter ego teammates swear is the real deal.

J.J. McCarthy passionately nodded his head, not blinking as he listened to his head coach’s speech. As the Minnesota Vikings ’ second-year quarterback made his way in front of his excited teammates, he clapped his hands together and let out a roar.

The days leading up to the Minnesota Vikings' matchup with the Detroit Lions were tense ones at TCO Performance Center. After

The Minnesota Vikings‘ J.J. McCarthy has shown signs that he could become the team’s franchise quarterback. His performances against the Chicago Bears and Detroit Lions highlighted his potential, as the young passer played a big role in both wins.