ABC has posted its episode recap for the season 5 finale and slipped in this little tidbit:
as the camera pulls back, we see what we've been waiting to see since we first glimpsed that four-toed foot over three years ago... the towering, majestic statue of the Egyptian goddess Taweret. And we clearly know we're a long time ago...
Naturally, our first stop upon hearing this news is Wikipedia, where we learn:
Her name means (one) who is great. When paired with another deity, she became the demon-wife of Apep, the original god of evil. Since Apep was viewed as residing below the horizon, and only present at night, evil during the day then was envisaged as being a result of Taweret's malfeasance.
...In their art, Taweret was depicted as a composite of all the things the Egyptians feared, the major part of her being hippopotamus, since this is what the constellation most resembled, with the arms and legs of a lioness, and with the back of a crocodile. On occasion, later, rather than having a crocodile back, she was seen as having a separate, small crocodile resting on her back, which was thus interpreted as Sobek, the crocodile-god, and said to be her consort.
...Taweret became seen, very early in Egyptian history, as a deity of protection in pregnancy and childbirth. Pregnant women wore amulets with her name or likeness to protect their pregnancies. Her image could also be found on knives made from hippopotamus ivory, which would be used as wands in rituals to drive evil spirits away from mothers and children.