These creatures are man-eating humanoids that have eyes either on the soles of their feet, or the back of the heel.
These creatures are deadly because they could easily devour a human being with their huge razor sharp teeth.
The disadvantage for this creature is that because the eyes are on the feet, their sense of sight aren't easily maintained, it would either have to stop chasing its victim to look around, lay down, or stand with it's feet in the air to detect you with its eyes. If the victim didn't give enough sense of smell or hearing to the Aigamuxa to chase them, they could possibly get away.