Blackmore is an efficient assassin, deeply loyal to Valentine; equally believing in his authority and cause. Blackmore is largely depicted with a placid personality, talking slowly and being impassive to most things. Blackmore has a notable verbal tic, as he regularly mutters "'Scuse me". Blackmore's Stand, Catch the Rainbow, allows him to manipulate rain/walk on rain, the mask stand has a light color aside from three colorful stripes crossing from its left eye hole to its right cheek.