In order to play the super-soldier, Kinnaman trained in a variety of martial arts, including Taekwondo, jujitsu, and a Filipino discipline called kali, which uses knives and other weapons. He also did gymnastics and wire training, the latter of which enabled him to fly through the air.
"It was very much about learning skills," Kinnaman told NME. "There was a wide variety of different kinds of things we did, but then there was also just physical training in the gym and being very disciplined with food and getting the aesthetic aspect of it right."
The results of that intense work can be seen in Kinnaman's introductory scene in Altered Carbon's premiere, where Kovacs emerges naked from the plastic bag his new body was being stored in, showing off his multipack abs, sharpened v-lines, and rock-hard glutes.
