Answer:
They are humans who blend into everyday society.
Explanation:
Unlike the old concept of monsters, which presented them as horrible and deformed creatures, modern-day monsters are completely normal human beings who blend easily into society.
"The concept of modern-day monster seek to teach people that appearances can be deceiving: someone who looks completely ordinary could be a sociopath, a thief or even a murderer; while people who may look odd or have strange interests may be completely harmless".
