Here is a list of mythical creatures beginning with this letter and I am constantly gathering information from each continent and continually updating.
A Bao A Qu (Malay)
A Bao A Qu is a legendary Malay creature described in Jorge Luis Borges's 1967 Book of Imaginary Beings. Borges claimed to have found it either in an introduction to the Arabian Nights by Richard Francis Burton, or in the book On Malay Witchcraft (1937) by C.C. Iturvuru. The Burton reference was given in the original Spanish, but it was changed to the Iturvuru reference in the English text, possibly to make it sound more exotic, or as a reference to Borges' friend C. C. Iturburu.
The writer Antares conjectures that Borges's tale might be inspired by Orang Asli myth, and that "A Bao A Qu" is a slurring of abang aku meaning "my elder brother". In Borges's story, the A Bao A Qu lives on the steps of the Tower of Victory in Chitor, from the top of which one can see "the loveliest landscape in the world". The A Bao A Qu waits on the first step for a man brave enough to try to climb up. Until that point, it lies sleeping, shapeless and translucent, until someone passes.