Jensen Ackles was very particular about his Soldier Boy voice on The Boys

polygon.com:

Alongside a Seth Rogen cameo, Friday’s episode of The Boys finally unleashed Soldier Boy upon the world. So far he hasn’t done too much beyond walking around, wreaking havoc on his surroundings, or taking vengeance on an old flame. But in typical Jensen Ackles fashion, he’s striking nonetheless. If you’re not admiring the hair (pre- or post-cut; that’s between you and your deity) then you’re hearing his voice, with that old-timey boom.

Soldier Boy’s toneisn’t that far off from Ackles’ regular low voice.But Soldier Boy certainly speaks with a notable affect; it’s grandly confident, resonant even when he’s not speaking all that loudly. The tonal quality wasa choice, Ackles said, that he made after doing some research for the role.

“I went back and I actually got a list of old movies and old actors from [...] largely the ’50s and the ’60s. And I watched some of those — not even the films, but like, interviews actors would do about their films,” Ackles tells Polygon. Though Ackles stresses that he wasn’t trying to copy any one person in particular, he did point to some of the names that came upas he poked around the era: Robert Mitchum, Edward G. Robinson, and Lee Marvin.

“There was just a different cadence in which they spoke back then. And I wasn’t necessarily trying to copy that, but I just let that influence how I was speaking as Soldier Boy a bit.”

The result is a man that instantly sounds like he’s plucked from the past. He speaks methodically, but not robotically, sonorous and commanding even as he’s saying (possibly) the most batshit things you’ve heard from a superhero. Ever wanted to hear Robert Mitchum rap off-beat on a variety show while dressed like Captain America? Of course you have.

Ackles is no stranger