The term 'FABULOUS FELLOW' can be solved by the crossword solution AESOP. AESOP was an Ancient Greek storyteller who is best known for his fables, which are stories that feature animals and inanimate objects as characters and often have a moral lesson. He is believed to have lived between 620 and 560 BC and is credited with writing over 600 fables. His stories have been translated into many languages and remain popular today.