The British actor is set to star in Unbound Captives with the X Men Origins: Wolverine star and revealed they bonded by seeing who could perform the best renditions of classic tracks by Swedish group Abba.
Robert said: We met up in Japan and we went karaoke singing. We were singing Abba songs, it was pretty funny. It was sort of an Abba song sing-off, you know, last man standing.
"I think he won, only because he can drink more than me and still sing in tune. He's a cool guy and I'm really looking forward to that film."
Robert has previously shown his musical side by recording songs for the Twilight soundtrack and despite also featuring in the music for sequel Twilight Saga: New Moon says he felt like a t****r when the movie came out.
He told the Sydney Morning Herald newspaper: "When the first film came out I felt like a complete t****r. It looked like I was trying to be cool or something, like Eminem. You know, be in a movie and then do a song for the soundtrack. But I didn't look cool, I just looked ridiculous."
