Ib is the titular protagonist of the horror puzzle game titled 'Ib'. She is a young girl who visits an art gallery with her parents, only to find herself trapped in a surreal world within the gallery itself. Ib is portrayed as a quiet and curious child, determined to navigate through the eerie environments and solve puzzles to escape. Throughout her journey, she encounters various characters and creatures, each with their own mysterious backgrounds and intentions. Her role is to uncover the gallery's secrets and find a way back to the real world.