11. FORGOTTEN SOUL Spirit, Fury
If even a tiny fraction of people remain as ghosts at the place where they died, then old cities must be swarming with unseen spirits, moving amongst us every day. This monster's figure would be a humanoid shape cast in transparent plastic, surrounded by some swirling newspapers (a tip-of-the-hat to Vincent Schiavelli's subway-haunting character in the movie Ghost).
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