confabulist

One who confabulates; a companion with whom one chats or confers.

I knew him only as a grey-bearded sage — he was my father's friend and close confabulist! " said Hueline, with a slight smile.

... his heaven—the organ and confabulist of angels and spirits, their ideal brother.

One who invents elaborate stories, especially false ones misrepresented as if they were true.

The confabulist, who simply cannot resist making up stories, wastes an enormous amount of other people's time.

Oh — well, you see, that part's true. But not everything I say is true. Part of my illness. I'm a confabulist.

Involving the invention of elaborate stories.

Why did he always come up with the most romantic and confabulist notions?

The speculative drawings of architects raise the possibility that all architectural drawings, rather than representing a future building, are confabulist pre-enactments—that is, they tell the story of a world that may be, that could be, that might or even ought to be; but is not, and will never be.