Mare: The mare is a malevolent spirit from Germanic and Slavic folklore known for terrorising individuals by sitting on their chests during sleep and inducing nightmares.

Mare - Explains the causes of nightmares and sleep paralysis in ancient belief systems

Mare

Mare - Explains the causes of nightmares and sleep paralysis in ancient belief systems

The mare is a malevolent spirit from Germanic and Slavic folklore known for terrorising individuals by sitting on their chests during sleep and inducing nightmares. Its ethereal, shadowy form remains largely unseen, contributing to its ominous presence. Rooted in ancient myth, the mare offers an explanation for the horrifying experience of sleep paralysis and nocturnal terror.

Origins & First Encounters

Source Texts & Tale Variants

Form & Powers

Regional Faces

Cultural Parallels

Legacy & Modern Evolution

Interesting Fact

The very term 'nightmare' is derived from the concept of the mare, underscoring its profound influence on our cultural understanding of sleep disturbances and nocturnal terror.

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Quick Creature Info

Our Mythic Legendary Rating:

Ethereal Power
Ethereal Power rating

Also Sometimes Known As:

Mara

Habitat:

The realm of dreamsEtherealNight and dreamsEuropeAppears during sleep to instil nightmaresSleeping environments; human dwellings at nightWithin the dream realm and ethereal plane

Supernatural Powers:

Induces nightmaresCauses sleep paralysisCreates oppressive dream illusions

Physical Attributes:

Insubstantial formUnseen presence

Abilities:

Nightmare inductionPsychological manipulationIntangible nature makes it hard to combatEternity grants sustained influence

Behavior:

MalevolentHaunts sleeping individuals and induces fear through nightmares

Weaknesses:

Operates primarily at night and is limited by the waking realm

Lore:

Nightmare BringerGermanic and Slavic folkloreExplains the causes of nightmares and sleep paralysis in ancient belief systems

Related Creatures, Tales or Lore

References

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Curated by the Mythological Creatures Team

Series editor: Mythological Creatures Directory

Primary desk: Northern & European Folklore Desk

(rev. November 2025)