This piece in Taipei's Ximending is unmistakably Omen even without the tag. I'm not sure about the blood, I think that may have been added later. I remember seeing the Curly tag in Taichung before, and DABS was all over the place in Ximending. Omen's work is understated and bold. He is a suitable counterpoint to the other guys in 4Crew whose work is usually pretty extravagant. Omen is grounded and damn near omnipresent.