The actor is doing the rounds to promote the movie and shared this exclusive scene on the late-night show.
As Hemsworth explains, the character alongside Thor in the clip is Korg, played by the movies director Taika Waititi. It's entirely improvised and there’s no mistaking that Kiwi accent.
He also talks about working with the legend that is Jeff Goldblum and photoshopping a photo of a sweaty Sir Anthony Hopkins.
Watch the clip here:
Thor: Ragnarok is in cinemas on October 27th.