Merlin and Romani Archaman from Fate/Grand Order HD Wallpaper

Two male characters are depicted standing side-by-side against a white background. The character on the left has long, reddish-brown hair and wears a black coat with gold trim over a ruffled white shirt and dark pants. The character on the right has long, white hair and wears a white coat with purple accents over a dark vest and white pants, holding a cane.