I had this idea from the famous Shanna Moaker divorce cake but specific to my friend's ex-husband, who was a musician. I was bringing it to a restaurant for her Divorce Party.
The purple trim is icing. The blood is red icing with some corn syrup to make it more liquidy to pour on cake. The cake topper is actually a store-sold bride dragging the groom but when separated it looked like she pushed him off the cake.
I smeared the icing to look like he fell of the cake and the bride smashed his guitars. This table centerpiece was a big hit!