Actress Cate Blanchett will be seen playing a villain in the forthcoming film "Thor: Ragnarok", says her co-star Mark Ruffalo.

"I saw her at the governors' banquet and heard that maybe she was circling, they were talking to her about the part, so I ran up to her and I was like, 'Please, please, please make this work'," Ruffalo told etonline.com.

"She's just one of the best, and to have her play a baddie is going to be really exciting," he added.

Speaking to chat show host Jimmy Kimmel, Blanchett had joked she was actually taking over the role of Thor from Chris Hemsworth.

Taika Waiti will direct the highly-anticipated film, which is expected to hit the screens in 2017.