Mild-mannered comedian Bob Odenkirk becomes on-screen killing machine in violent film Nobody

A behind-the-scenes feature about the upcoming action film Nobody reveals some of the physical training Bob Odenkirk underwent to transform for the lead role.

The 58-year-old Better Call Saul star was more well known as a comedy actor than a violent action movie star, but the feature gives a glimpse at the intense gym work and combat training he did for the R-rated new film.

"I wanted to commit completely and go all the way into utterly unapologetic rage," says Odenkirk in the video.

"I started as a comedy writer in this business, so, no exercise at all. In Nobody I play a dad and I have this [hidden] past, but because of a break-in I reengage with violence in my life. I knew that this was something that would be really challenging for me personally.

"I knew that I had to go to a whole other level if I wanted to actually do the fighting and not get hurt."

Nobody is directed by Ilya Naishuller (Hardcore Henry) and produced by David Leitch (John Wick).

"Bob took to the challenge whole-heartedly," says Leitch in the video.

"He knew that if he wants to play this character, he has to pay the price," adds fight co-ordinator Daniel Bernhardt.

"We started in November 2017. He would learn how to punch, how to kick, how to throw [people], and he would not quit."

In New Zealand, Nobody is rated R16 for "strong violence and offensive language", and will be in cinemas on April 1.