'Game of Thrones' Ser Davos, I'll Be The Baddest Fighter In The Land

"Game of Thrones" star Liam Cunningham is taking his fighting skills past just using a sword ... getting some one on one MMA training with Conor McGregor's right hand man.

John Kavanagh, who's known for working with McGregor posted a video of Cunningham Saturday going at it in the ring. It's interesting, Cunningham, who plays Ser Davos Seaworth on the show isn't the first GOT star to take lessons from Kavanagh ... The Mountain was in there a few months ago too.

Too bad we gotta wait til next season to see if the training comes into play.