One of the many oysters of the Isle of Wonder, the Little Oyster laid in the Oyster Beds with the others. Unlike the others, when Alexander arrived on the island, she was awake, unable to sleep because of the ache in her mouth. Alexander read to her from the Boring Book, and noticed the Large Pearl in her mouth. While she yawned, he grabbed the pearl. Her pain gone, the Oyster soon fell asleep.
The Little Oyster appears in King's Quest VI: Heir Today, Gone Tomorrow.