But the purpose of the makeover wasn't just to shed the weight of his recent characters: Momoa actually did it to raise awareness about how plastic is harming the planet. In the four-minute video, the actor urges viewers to drink out of recyclable aluminum cans rather than plastic water bottles, and reveals that he's launching a brand of his own to make it easier to do just that. “I just want to do this to bring awareness that plastics are killing our planet," he says.