Water (NPC)

A sapient well of water which has somehow been imbued with the power of speech can be found in Castle Britannia during Ultima IV.

Description
Shawn, a refugee of Magincia, kept a long vigil over the mysterious waters, but did not appear to know of their sentience. Should the Stranger learn from Chuckles that the water was capable of conversation, the hero would know to inquire after the great altars which lay beneath the dungeons. When asked about this topic, the well revealed that the three altar rooms connect the bottom levels of all eight dungeons and if the correct combinations of stones were used at these sites, the key of three parts could be obtained.

Trivia

 * In the Nintendo remake of Ultima IV (Japanese original), Water can be identified with the same elemental creature. This character was removed in the English localization. Instead, it can be identified with a woman in Empath Abbey, who gives the same information.