The term Iconoclast refers to someone who seeks to overthrow traditional or popular ideas or institutions, often of a political or religious nature. An Iconoclast typically feels the beliefs or traditions associated with the ideas and/or institutions are erroneous and must be done away with.
It appears that his actions are in direct opposition to Metatron’s – and Christine definitely sees the wisdom of following the universal law embedded in Metatron’s ways. Ironically, the Iconoclast and Christine have overlapping objectives; to a degree they are trying to achieve some of the same ends. So, is he an enemy or not?
Arcs are the Iconoclast’s army. Like Light Beings, they have incredible powers due to their physiology. They are capable of killing Light Beings.