The
gigantic tortoise upon whose back the
Discworld rides, in the popular
Terry Pratchett series.
Actually, four
elephants stand on the
tortoise, and the
disc rotates upon their backs. There are no good
theories to explain the tremendous
friction.
Great A'Tuin is
female, and is now a
mother.
The
wizzard Rincewind once had a very close encounter with the Great A'Tuin (which involved
falling off of the
Disc).