 Warwick Davis as Nikabrik , a black dwarf . He is descendant of Ginarrbrik , who served the White Witch , and bears one of his rings , which was passed down from each generation . Mark Johnson acknowledged casting Davis as the treacherous Nikabrik was casting against type : Berger covered all his face bar his eyelids in prosthetics , to allow Davis to ward off the audience 's perceptions of him . Nikabrik 's nose was based on Berger . Davis feared filming in the Czech Republic , because the grass is filled with ticks , so he put elastic bands to hold his trousers against his legs . Davis portrayed Reepicheep in the 1989 BBC production of Prince Caspian . 
