How do we call someone who has delusional fantasies of power or omnipotence?

Question: How do we call someone who has delusional fantasies of power or omnipotence?

Options:

Megamorphic
Grandologist
Megaphist
Megalomaniac

Correct answer:

Megalomaniac

Other game answers:
Find the answers to guess the gif, logo quiz 2015, emoji puzzle and emoji nation.
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