Jinny

Jinny was a demon condemned to be a genie in a bottle by an ancient sorcerer (Jinny didn't want to marry him). Whoever frees her from the bottle, must take her place and becomes a genie.

Jinny's bottle came into the hands of Phoebe Halliwell. After she was freed, Jinny became a demon again and vanquished Bosk, while Phoebe took her place as a genie. Phoebe later switched places with Richard Montana, and Jinny wished the Charmed Ones dead, but it was incomplete thanks to Leo Wyatt. Phoebe was able to trick Jinny into returning to her place as a genie.