One Key Thor Supporting Player Doesn't Know If He'll Be Back For Ragnarok

Lately, a lot of the news concerning Thor: Ragnarok has revolved around The Hulk's involvement and Cate Blanchett's rumored villain, but what about the existing players in the God of Thunder's world? So far the only characters are Thor himself (obviously), Loki and Lady Sif, though there's a strong possibility that Odin will be back as well. Meanwhile, there are still quite a few who have yet to be officially announced for a return, including Volstagg, one of the Warriors Three. Actor Ray Steven...