The Crimson Mask
Made popular by the late great Ric Flair, The Crimson Mask is a metaphor for obtaining a head wound or upper facial wound in which it almost instantaneously  bleeds down into and all over ones face, thus providing the effect of the Crimson Mask. This is mostly a professional wrestling term.
They bludgeoned Franks head in soo bad he suffered a concussion along with "The Crimson Mask."