The term 'Uncle of Fiction' is a reference to three characters from literature: Tom, Remus, and TOBY. Tom is a character from the novel 'The Adventures of Tom Sawyer' by Mark Twain, while Remus and TOBY are characters from the novel 'The Wind in the Willows' by Kenneth Grahame. Tom is an adventurous young boy who gets into all sorts of mischief, while Remus is his uncle who helps him out of trouble. TOBY is another uncle of Tom's who is a wise and kind-hearted badger. Together, these three characters form the 'Uncle of Fiction' and provide a source of wisdom and guidance for Tom.