He explained how he likes to mix things up with surprising casting.
"I tend to do this every season, I like to do some casting that's a little bit outside the box, you know, from Stephen King to David Hasselhoff – we try to do stuff that's fun," he explained.
Manson's friendship with Sutter helped him land the role of Ron Tully, a white supremacist prisoner who Jax [Charlie Hunnam] uses to expand his power base.
Ian, who stars in The Vampire Diaries, and Nikki, who starred in the Twilight Saga films, enjoyed one another's company throughout the weekend in Los Angeles. The pair was spotted enjoying a jog and visiting a farmer's market, with no attempt to hide some serious PDA.
Ian and Nikki have been friends for some time and were spotted on group dates while they were with their former partners. Ian previously dated Nina Dobrev and Nikki divorced Paul McDonald back in March.