He can turn a beer belly into a six-pack on command. He willingly French-braids his wife’s hair. And he even knows the secret to calming down a fussing toddler – at least his own, Jack, his 23-month-old son with wife Anna Faris.
"Monster trucks," Pratt says with a warm chuckle.
"He was crying the other day, and I had him on my lap. So we watched this 15-minute highlight reel of Grave Digger on YouTube, and dude, it was so badass! He and I both were just wide-eyed. Now he goes around saying, 'Monster trucks, monster trucks!'"
Once best known as dopey and doughy Andy Dwyer on NBC's Parks and Recreation, Pratt transformed into a steely-abbed comic-book hero in the summer popcorn movie Guardians of the Galaxy.
But don't think for one second that Pratt, 35, has lost any of his horsepower-loving, squirrel-hunting, wisecracking everyman vibe.
This is a rising A-lister cut from unpretentious cloth.
"There's nobody out there like him," says Guardians director James Gunn.
"He's hilarious and masculine with an old-time movie star charisma and a likable vulnerability that is uniquely his own."
Pratt's own take?
"Just be yourself, and hopefully they can shape an epic space adventure around exactly who you are."