According to Muscle and Fitness, personal trainer Leanne Marshall worked with the cast for much of Season 2. "Working with actors from 'The Witcher' Season 2 is definitely one of the highlights of my career," Marshall said. "I was a fan of the show, and then being able to work with the characters, and get them aesthetically ready for their roles was an incredible experience."

Marshall worked specifically with Paul Bullion and Joey Batey to get them in shape, as their roles were physically demanding. Bullion portrayed Lambert, a fellow witcher and friend to Geralt. As his character was a fighter, it made sense for the actor to work with Marshall to prepare. However, fighting was a big change for the character of Jaskier. For most of the first season, he spent his time traveling with Geralt and writing the ever-so-catchy tune "Toss a Coin to Your Witcher" (admit it, you still hum it to this day). Season 2 saw Jaskier take part in more fight scenes, which required more training on his part. And when your co-star is the incredibly in-shape Henry Cavill, some extra muscle doesn't hurt.

Marshall has worked on other television sets outside of "The Witcher." She trained a few cast members on "Peaky Blinders" to get them screen-ready for the period crime drama, and did the same for "Gangs of London." But who is Marshall, and what exactly did she do to get Batey in shape?