Language: Deep speech

Spoken by Aboleth
Spoken by Beholder
Spoken by Cloaker
Spoken by Death Tyrant
Spoken by Mind Flayer
Spoken by Mind Flayer Arcanist
Spoken by Spectator
Spoken by Choker
Spoken by Star Spawn Grue
Spoken by Star Spawn Hulk
Spoken by Star Spawn Larva Mage
Spoken by Star Spawn Mangler
Spoken by Star Spawn Seer
Spoken by Alhoon
Spoken by Death Kiss
Spoken by Elder Brain
Spoken by Gauth
Spoken by Illithilich
Spoken by Mind Flayer Psion
Spoken by Mindwitness
Spoken by Neogi
Spoken by Neogi Master
Spoken by Ulitharid
Understood by Beholder Zombie
Understood by Chuul
Understood by Intellect Devourer
Understood by Balhannoth