giant: an imaginary figure of superhuman size and strength; appears in folklore and fairy tales
imaginary being: a creature of the imagination; a person that exists only in legends or myths or fiction
tardigrada: in some classifications considered a separate phylum: microscopic arachnid-like invertebrates living in water or damp moss having 4 pairs of legs and instead of a mouth a pair of stylets or needlelike piercing organs connected with the pharynx