->''"I feel it deep within,''
->''It's just beneath the skin,''
->''I must confess that I feel like a monster!"''
-->-- '''Music/{{Skillet}}''', "Monster"

->''"I don't know what stressed me first, or how the pressure was fed\\
But I know just what it feels like to have a voice in the back of my head\\
It's like a face that I hold inside\\
Face that awakes when I close my eyes\\
Face that watches every time I lie\\
Face that laughs every time I fall"''
-->-- '''Music/LinkinPark''', "Papercut"

->''"So what if you can see the darkest side of me?''
->''No one will ever change this animal I have become!"''
-->-- '''Three Days Grace''', "Animal I Have Become"

->''"Over and over again, I relive the moment''\\
''I'm bearing the burden within, open wounds hidden under my skin''\\
''Pain as real as a cut that bleeds''\\
''The face I see every time I try to speak is staring at me, crying"''
-->-- '''Music/DreamTheater''', "The Enemy Inside"

->''"It waits for the day I will let it out''\\
''To give it a reason, to give it its might''\\
''I fear who I am becoming''\\
''I feel that I'm losing the struggle within''\\
''I can no longer restrain it''\\
''My strength, it is fading''\\
''I have to give in"''
-->-- '''Music/WithinTemptation''', "It's the Fear"

->''"...you're the voice in there, aren't you? Just beneath the surface, buried under all that goodness. Fully conscious, fully aware, but trapped. Unable to move or speak, powerless to act on your desires. So ''thirsty'', so helpless. It must be agony."''
-->-- '''[[spoiler: Jasmine]]''' on '''Angelus''', ''Series/{{Angel}}''

->''"''Stay away!!'' There's no telling what I'm going to do next!"''
-->-- '''Inuyasha''' to '''Kagome''', after transforming into a full demon for the first time, ''Manga/{{InuYasha}}''

->''"I'm only a man with a candle to guide me''\\
''I'm taking a stand to escape what's inside me''\\
''A monster, a monster''\\
''I've turned into a monster''\\
''A monster, a monster''\\
''And it keeps getting stronger"''
-->-- '''Music/ImagineDragons''', "Monster"

->''"I want to resist - but I can't hold it back\\
The beast is unleashed - it's got to attack\\
Again and again the force is too strong\\
It's breaching the chains"''
-->-- '''Music/{{Accept}}''', "The Beast Inside"

->''"Looking inside of me \\
I think I can see\\
Something that makes me feel so cold\\
Something that may be real\\
You donít know how it makes me feel\\
Wondering when it will emerge\\
From the darkness..."''
-->-- '''Sam''', "The Beast Inside Of Me"

->'''[[ReformedCriminal Weaver]]''': I feel... afraid, because Iím starting to think that maybe my power isnít entirely under my control. Thereís a monster taking up real estate in my brain, deciding to use my power when I donít want to, and Iím pretty sure itís been getting more effective over time.\\
'''Dr. Yamada''': Is this monster metaphorical?\\
'''Weaver''': Thatís a ''very'' good question. Is it just me? Or is it my Ďpassengerí, [[EldritchAbomination some inscrutable life form from a parallel universe]] that decided to give me [[DifferentlyPoweredIndividual powers]], [[RequiredSecondaryPowers currently helping me manage those powers so my brain doesnít overheat?]] Or is there even a distinction? Did my [[TraumaticSuperpowerAwakening trigger event]] fuse us to the point that the line is blurred beyond recognition?\\
'''Dr. Yamada''' I can see where the idea would be frightening. Iíve heard of some of these things, though the particulars and names differed. We donít know enough about them, about powers, even, and the unknown is daunting, especially when it affects you as deeply as your power seems to affect you. This lack of control, it-\\
'''Weaver''': If I tell you Iím dangerous, that Iím going to hurt someone, intentionally or by accident, are you obligated to report it?\\
'''Dr. Yamada''': Yes, if the risk is grave. Forgive me for asking, but are you going to hurt someone? Accidentally or otherwise?\\
'''Weaver''': No. But it makes me wonder if something like that is a possibility.
-->-- ''Literature/{{Worm}}''

->I won't trouble you again... [[ParanoiaFuel until I need to]]. There's an exit to your left which will no doubt take you back to the surface of this commerce planet. I leave you to your shipmates, John. But rest assured, [[LongGame I'll be with you always]]. ''[[NotSoImaginaryFriend Keeping]] [[FalseFriend you safe]].'
-->-- '''Harvey,''' ''Series/{{Farscape}}''

->'''Prince''': Your words are empty, have ''always'' been empty. You are just a desperate, selfish spirit!\\
'''[[SuperpoweredEvilSide Dark Prince]]''': If I am selfish, Prince, it is because ''you'' are. If I am ruthless and reckless and lacking in morals, it is because ''you'' are! I did not spin myself out of the ether! I was not conjured by some mad Vizier! [[PunctuatedForEmphasis I. Am.]] ''[[PunctuatedForEmphasis You!]]''

->[[VillainSong Think I can taste your fear]]
->Now that my time is near
->I'm in your blood, I'm so alive!
->I only wish you'd [[SplitPersonalityTakeover let me drive]]!
->It won't be long till I make you kill.
->Who'll be laughing then?
-->--'''The Joker,''' ''VideoGame/BatmanArkhamKnight''

->'''ComicBook/{{Starfire}}''': Listen. When [[ComicBook/LexLuthor Luthor]] flew off-- I was pretty out of it, but I thought '''you''' went after him.\\
'''ComicBook/{{Supergirl}}:''' I '''did'''. In a way. But it wasn't '''me'''. And it's not a '''good''' thing.\\
'''Starfire:''' What? Like an evil twin?\\
'''Supergirl:''' I... don't know. More like it was part of me.\\
'''Starfire:''' I have a sister. They call her '''Blackfire'''. I feel like I'm responsible for '''every''' bad thing she does.\\
'''Supergirl:''' Yeah, well, in '''this''' case... I think I am.\\
'''Starfire:''' Do you know where this... "she" is?\\
'''Supergirl:''' I do. She's been in my head... Maybe... '''All my life'''.\\
'''Starfire:''' And now? How do you feel having her out?\\
'''Supergirl:''' The truth...? Relieved.
-->-- ''ComicBook/Supergirl2005'', ''Girl Power''

->'''Brian Newman:''' When I was a kid, I had this [[ImaginaryFriend imaginary friend]] called Big Winner. He was like my shadow come to life. He was the one who [[RealityWarper fixed things]] for me... [[PowerIncontinence whether I wanted them fixed or not]]. He seemed very real to me... for a long time. And the older I got, the worse he became.
->'''Dr Mahorta:''' The anomaly in your brain is connected to an overdeveloped amygdala, a more primitive part of the mind. The part of you that can distort reality - this Big Winner - is undoubtedly very [[PsychopathicManChild Id-like. Impulsive. Childish]]. A sort of negative image of yourself. You seem like a decent, thoughtful guy... [[JekyllAndHyde which means your Big Winner isn't, unfortunately]]. But he's not going to win this time, Brian. ''You'' are.
->'''Brian Newman:''' I hope you're right... for both our sakes.
-->--''Series/TalesFromTheDarkside: Black Box''

->'''Kilgrave:''' Extortion, forgery, and now ''murder.'' [[WhatTheHellHero Is there no crime Jessica Jones won't commit to get what she wants?]]
->'''Jessica:''' [[SurvivalMantra Main Street. Birch Street. Higgins Drive-]]
->'''Kilgrave:''' [[NoSell Cobalt Lane]]. I know all the quaint side-streets of your mind, Jessica. Every dark little alley.
->'''Jessica:''' ...I just need sleep...
->'''Kilgrave:''' I'll be in your dreams, too. ''I'm inside you forever...''
-->--''Series/JessicaJones2015'', "AKA Three Lives And Counting"

!!TabletopGame/{{Warhammer 40000}}

->''"What foes are we to meet in battle that we have not vanquished in the shadows of the human soul? What Daemons scream that have not cried to us from the dark places of the mind? What fear have we of death who know there is immortality in the great and noble deeds of men?"''
-->-- '''The First Book of Indoctrinations'''

->''"There is no foe more rank or malefic than the traitor. We rightly abhor the traitor that leads the enemy to our gate. We revile him for the annihilation of worlds and the murder of innocents. We each loathe him for the harm that he does to us. The scars that we bear remind us to keep our hatred bitter.\\
What hatred have we for the traitor within? No, I mean not the traitor that hides amongst us. For it is our very flesh that is the greatest of traitors, the betrayer who corrupts and weakens us more than any other foe. It is the enemy within that we harbor unknowingly. His name is mutant, witch and deviant. He is the foe that will destroy us as no other can. He leads us before a hellish throne to dance enfeebled and imbecilic for the lewd pleasures of dark gods.\\
Burn the mutant and the heretic that shelters him! Burn the witch and those that worship him! Burn the deviant and those tainted by him! Let their deaths purify us so that in dying their bodies serve mankind as in life they never could.\\
All men, women, and children throughout the Imperium carry within them the twin seeds of our defeat. The unstable gene is a mutant beast waiting to erupt; the unstable thought a Heretic Apparent. The Mutant bears his Heresy on the outside; the Traitor hides his in his soul. Trust no one! Fear all! Any one of your fellows may carry the Mark. The Will of the Emperor alone cannot protect you. You must be strong! You must join the crusade and take your place in the unceasing struggle!\\
Against whom will the battle at the end of time be fought?\\
Know only that it will not be against enemies from without."''
-->-- '''The Catechisms Martial'''

->''"Only in the deepest self is the truth of what you can be, and without a doubt, the truth is terrible to bear."''
-->-- '''The Book of the Astronomicon'''