megalomaniac 

1. A psychopathological condition characterized by delusional fantasies of wealth, power, or omnipotence.
2. An obsession with grandiose or extravagant things or actions.

For example, Prince Naseem.

megalomaniac by Rowen September 12, 2004

Megalomaniac of Doom 

A megalomaniac such a megalomaniac that they become a Megalomaniac of Doom. (Capital letters are required.)

Jeff is a power hungry Megalomaniac of Doom.

Megalomaniac of Doom by Megalomaniac Of Idiosyncrasies February 15, 2020

megalomaniac 

A person needs complete control over everything such as a world or a timeline

Sans: woah chara is a megalomaniac

megalomaniac by Rosey221 June 27, 2017

Megalomaniac 

a melomaniac who is constantly listening to megalovania (I don't know how to spell it, I haven't played undertale in a long time)

*megalovania plays*
*Megalomaniac mode activated*

Megalomaniac by ♥🗺☠ March 1, 2021

Megalovania 

sans

sans Megalovania

Megalovania by notessayharperipromise January 12, 2022

meaglovin 

kick ass person that everyone wishes they could be

probably owns ray-ban glasses

like mclovin
but so much cooler

that girl is such a meaglovin

meaglovin by meag April 28, 2008

megalomania 

a psychopathological disorder resulting from delusions of magnificence, grandeur, or omnipotent power -- usually, but not limited in the interests of money or other wealth.

(1) Adolf Hitler

(2) Saddam Hussein

(3) Osama BinLaden

megalomania by Postman January 13, 2005