Hugh Bonneville Hugh Bonneville

Arr! Galavant has raided the Downton Abbey cast for one of its guest roles.

On Sunday's Galavant (8/7c, ABC), our dashing hero (Joshua Sasse), his squire (Luke Youngblood) and Princess Isabella (Karen David) are on a journey to defeat the evil King Richard (Timothy Omundson) when they come upon a group of pirates, led by Downton Abbey's Hugh Bonneville.

5 Reasons you should watch ABC's musical comedy Galavant

Only this is Galavant, and therefore, these aren't any ordinary pirates. Check out the two exclusive clips below. The first is an interview with Bonneville weighing in on playing the Pirate King, and the second is a sneak peek that shows him in his full dreadlocked, guylinered glory:

Galavant airs two back-to-back episodes on Sunday at 8/7c on ABC.