Cassiel is Shade's father and Ariel's mate. He had been banded by humans, and also went missing before Shade was born, presumed to be killed by the owls. He was actually trapped in the human-made building that Shade and his team travel to in Sunwing. He was then attached to an exploding band and brought to South America, as a tool used by the humans to bomb enemy buildings. Cassiel survived, however, along with others who stayed at Statue Haven. Before Shade came, however, he had been captured by the Vampyrum Spectrum as an intended sacrifice to Cama Zotz.