K'tharr is an ancient black dragon of immense size and terrifying cunning. It lurks in the most fetid swamps and lightless abysses, its scales corroded and hardened by countless ages of acid. Its breath weapon is a torrent of caustic liquid that melts flesh and steel, and its roar can shatter the will of even the bravest warriors. K'tharr commands minor elemental servitors and casts powerful evocation and illusion spells, seeking to expand its dominion of despair and corruption.