The term 'FABULOUS CREATURE' can be broken down into two crossword solutions: UNICORN (7 letters) and YETI (4 letters). The UNICORN is a mythical creature that has been featured in literature and art for centuries. It is typically depicted as a white horse with a single, spiraling horn protruding from its forehead. The YETI, also known as the abominable snowman, is a cryptid said to inhabit the Himalayan region of Nepal and Tibet. It is described as an ape-like creature covered in white fur.