Vast grotesque tentacled creatures who live in the sea, and which are extremely dangerous to anyone or anything that comes too close to them.
They are commonly believed to be the female counterparts of the dragons, since no female dragon has ever been seen. This means that they are from the dragon plane of Kelgor. The act of mating is potentially deadly to a dragon, since a kraken will wrap its tentacles around the male and drag it under the water; only the strong dragons will break free and fly away instead of drowning.
It is unknown how intelligent they are.