Energy drinks, death stares and sideline swag: Inside Sean Payton's 'game-day' alter ego

"I don't think there's going to be a lot of flowers and warm fuzzies for yours truly," Denver Broncos coach Dennis Allen says.

Payton 's meticulous attention to detail, motivational tactics and domineering personality helped build a winning culture in New Orleans .

The Saints traded Payton 's contract to Denver last year after he spent the 2022 season as an NFL analyst.

Broncos rookie quarterback Bo Nix has already taken some licks after Payton barked at him on the sideline during a Week 5 win against the Las Vegas Raiders .

"Game-Day Sean" personality doesn't last beyond the competition window.

"He is a Jekyll-Hyde type of person," former Saints tackle Terron Armstead says.

Quarterback Nix was listed at the bottom of his position with the rest of the rookies at the start of the season .

Nix has appeared to respond well to Payton 's tactics, including calling him Dennis Dennis the Menace .

The Broncos coach also pays close attention to the science of sleep studies in order to keep the team in the Eastern time zone.