A fiery holodeck character from the children's programme The Adventures of Flotter, who burns down the Forest of Forever and evaporates Flotter in the episode Once Upon a Time.
The Ogre of Fire appears in the Voyager episode Once Upon a Time. He is the menace in one of the Flotter stories, a series of holodeck tales set in the Forest of Forever that Federation children have enjoyed for generations.
Naomi Wildman is playing the story with the water creature Flotter and the tree creature Trevis while Neelix tries to keep from her the news that her mother's shuttle has crashed. The Ogre arrives, sets the forest ablaze and boils Flotter away to steam.
The scene upsets Naomi badly, coming just as she learns the truth about her mother. Later the forest is restored and Flotter condenses again, in keeping with the story's lesson about change.