So, I'm just realizing how freaky this should be from Hollow Man's perspective. Here he is, fighting a demon gifted / invested archmage / akuma 2.0 (or however he is conceptualizing Molly). Strange, but not too strange - demons are part of Creation here (that's actually quite interesting, metaphisically, because it might mean that Creation incorporated Malfeas and possibly other Primordials into itself at some point). And then suddenly Molly is dropping an Old One backed and fueled curse on him. Outsider magic of highest caliber. Summoning a Walker to fight him would be a lesser trick. This should be short circuiting his thought processes.
Speaking of,
@DragonParadox can we guess how Hollow Man's patrons would react to him calling an angel to stop us waking Ebon Dragon? Because I would expect at least some of them (the Neverborn faction, not the Raksha faction) to want such disasters in Creation. Has he, in desperation to survive, incurred wraith of his masters?