In Portal 2, the iconic character GLaDOS is turned into:

In Portal 2, the iconic character GLaDOS is turned into a potato. This transformation occurs when the main protagonist, Chell, incurs damage to GLaDOS's mainframe, causing her to upload her consciousness into a potato battery. This unexpected twist adds a humorous element to the game as GLaDOS, with her sarcastic and witty personality, continues to interact with Chell while existing in the form of a potato. This unexpected and unconventional choice further enhances the memorable and unique nature of the character.