In the Shadow Universe, the term "Circus Massacre" refers to the event where Art the Clown mercilessly slaughtered Cap Spaulding and every member of his circus, including the Jester and the entire Firefly Family. Art's rampage used a cleaver as his weapon of choice during the massacre. The Circus Massacre in the Shadow Universe caught people's attention, with many supporting Art's actions and expressing the sentiment, "Good riddance." Art, known for his meticulous approach, sought to uncover any connections the family had with others and discovered that Mick Taylor could potentially be an ally. ISG is now sending Anton Chigurh to kill Mick, solidifying the group's presence and capabilities.