meglamaniac 

A person who is obsessed with their power

Your such a meglamaniac

meglamaniac by Softball2737 February 25, 2018

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

Melomaniac 

Someone who has an extreme love for music.
Someone who is almost addicted to music

Do you know the girl who always listens to music? She's a Melomaniac.

Melomaniac by _BaccoX December 22, 2020

Metalmaniacal 

A term used to describe someone who is completely and utterly obsessed with heavy metal.

You are metalmaniacal because you took the time to alphabatize every band you listen to!

Metalmaniacal by Ryan Luchsinger July 31, 2008