It was previously reported that the actor will play a villain in the season four premiere.
In an official NBC video, he commented: "It's kind of fun to go back and revisit the Russian killing machine, but have fun with it. Hopefully the audience are going to like it too."
He added: "Working with the cast... is fun [and] different. It's a different genre than I'm used to, so I'm doing what I can and hopefully people will enjoy it."
Series star Zachary Levi also joked that he had been intimidated by Lundgren's presence on set.
"He's still big and muscular," said the actor. "And [he] looks like he's 32."
Chuck returns to NBC on September 20.