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Host-Based

Narrative device where an external entity, parasite, or distinct consciousness inhabits and interacts with its human host on a deep, internalized layer, blurring internal boundaries of selfhood, agency, and psychological identity.

The thrill of a second mind sharing your skull, a constant internal dialogue or struggle for control. The unsettling intimacy of another consciousness living inside you, influencing your thoughts and actions, and the fight to maintain your own identity against this internal invasion.

Books

SolarisStanislaw Lem
The TommyknockersStephen King
GatewayFrederik Pohl
End of WatchStephen King
Demon SeedDean Koontz
Under the skinMichel Faber
I Will Fear No EvilRobert A. Heinlein
Dead to the WorldCharlaine Harris
LegionWilliam Peter Blatty
The Dream MasterRoger Zelazny
ChockyJohn Wyndham
The Icarus GirlHelen Oyeyemi
WaspEric Frank Russell
FlukeJames Herbert
PeepsScott Westerfeld
Woman, EatingClaire Kohda
LeechHiron Ennes
The fever kingVictoria Lee
Devil HouseJohn Darnielle
Dragon and ThiefTimothy Zahn
MirrorGraham Masterton
Universal harvesterJohn Darnielle
The Vampire TapestrySuzy McKee Charnas
The Puppet MastersRobert A. Heinlein
The Green ManKingsley Amis
HydeDaniel Levine
Parasite EveHideaki Sena
FleshRichard Laymon
The Rhesus ChartCharles Stross
Made For LoveAlissa Nutting
The Salt RoadsNalo Hopkinson
StartersLissa Price
K-PaxGene Brewer
RavenorDan Abnett
Up the Walls of the WorldJames Tiptree, Jr.
Sweep in PeaceIlona Andrews
Man of two worldsBrian Herbert
PandemoniumDaryl Gregory
TouchClaire North
PhylogenesisAlan Dean Foster
You bright and risen angelsWilliam T. Vollmann
Follow me to groundSue Rainsford

Related

ParasiticPossessionItem-DependentViralGrantedEntangled