Donnie Wahlberg: Bloods Brother

Donnie Wahlberg

As the Blue Bloods cop most likely to shove a perp's head in a toilet, Danny Reagan (Donnie Wahlberg) makes it hard to tell which side of the law he's on. "He's a gray guy," says Wahlberg. "Is anyone really good or bad?" Though Danny exercises a little flexibility with constitutional rights, he's always a stand-up older brother to the youngest Reagan, Jamie (Will Estes), who recently joined the force. "It's sort of like the younger sibling that doesn't quite belong in the family business," Wahlberg says, comparing them to Sonny and Michael Corleone of The Godfather. "Danny wants Jamie to be careful and smart."

And in this week's episode, they'll have to be both. After a suspect dies, Danny must close a case to keep Internal Affairs off Jamie's back. "You'll see Danny giving Jamie a hard time, but you'll come to understand it's more complicated," Wahlberg hints.

It's a part made for Wahlberg, who has become a go-to guy for tough cops with roles on Boomtown and Rizzoli & Isles. And, of course, he's always been a big brother, famously launching the career of sibling "Marky" Mark back when they were kids. But he refuses to take credit for his Oscar-nominated brother's success. "Like all family members, we hope to establish ourselves in our own right, and Mark has clearly done that," Wahlberg says. "I helped him out early on, and thank God, because I'd rather visit him in Beverly Hills than prison. That's not fun." Spoken like a true big brother.

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