Character

Tarchannen Shadow Humanoid

elusive parasitic sentient transformative

The Tarchannen Shadow Humanoid embodies the alien lifeform from Tarchannen III. This gray, indistinct figure persists as an unaccounted shadow in simulations, revealing a parasitic intelligence that imprints on human minds and triggers physiological metamorphosis into its own species. It targets Starfleet explorers, driving them back to the planet through compulsion. Silent yet potent, it operates beyond physical detection, reshaping hosts without direct confrontation.

2 appearances

parasitic alien transformation

Also known as: Humanoid Creature (Shadow), gray humanoid figure, Humanoid Creature (shadow)

Tarchannen Shadow …'s Journey

A timeline through the narrative

2 moments

S4E18 · Identity Crisis

Geordi isolates the Tarchannen shadow

Ominous and invasive, radiating a sense of inevitability and horror. Its presence is not malevolent in a traditional sense but rather an inescapable force of nature, tied to the planet’s contagion.

The shadow humanoid materializes as a gray, roughly defined figure in front of the unexplained shadow after Geordi commands the computer to extrapolate its shape. It takes on a vaguely …

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S4E18 · Identity Crisis

Geordi’s transformation begins in the holodeck

Unfeeling (as a non-corporeal entity, it lacks emotion but embodies a creeping, insidious threat).

The Tarchannen Shadow Humanoid materializes as a gray, roughly defined figure during the vector analysis, representing the extrapolated shape of the object casting the unexplained shadow. It takes form bit …

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Affiliation

Starfleet

Federation Starship Command, Classified Intelligence, and Hierarchical Operations