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Aboleth

Large Aberration · · CR 10

  • Aberration
  • Large
  • Tier 2

Aboleth is a large aberration of lawful evil alignment, CR 10. Found in underground. Sourced from Monster Manual (5e 2014) and Monster Manual (5.5e 2024).

Stat Block

Challenge Rating
10
Type
Aberration
Size
Large
Alignment
Speed
Habitats
Underground
Sources
Monster Manual (5e 2014), Monster Manual (5.5e 2024)

Ecology

Aboleths are 20-foot tentacled aberrations dwelling in deep underground lakes, sunken cities, and ocean trenches. They are amphibious but prefer deep cold water. They are functionally immortal — when killed, an aboleth's consciousness simply transfers to a fresh body grown elsewhere in the deep. Each aboleth carries the memories of every aboleth that came before it, all the way back to creation.

Behaviour

Patient psychic tyrants who view all other life as raw material. They communicate by telepathy, prefer slaves to companions, and play centuries-long games of conquest. They despise the gods (whom they remember predating). An aboleth never forgets a slight or a slave — it can recall the face of an ancestor of its current target ten generations back.

Origin

Aboleths are among the oldest living things in the cosmos. Lore says they ruled the world before the gods imprisoned them under the seas — and they still resent it. Their racial memory holds that they 'invented' enslavement and that the gods stole the technique. Encountering an aboleth is encountering a lineage older than civilization itself.

CR 10 monstersAll AberrationsUnderground

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Frequently Asked Questions about Aboleth

What is the challenge rating of Aboleth?
Aboleth has a challenge rating of 10. It works against tier-2 parties.
What type of creature is Aboleth?
Aboleth is classified as a aberration in D&D 5e, large size.
Where does Aboleth live?
Habitats for Aboleth: Underground.
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