Fun fact: a mythological creature from Scotland exists that is depicted as a fused state of horse and rider: the Nuckelavee
I mean, it's also a poison/water plague demon with no skin, but is that really important?wikipedia said:According to Tammas, the nuckelavee has a man's torso attached to a horse's back as if it were a rider. The male torso has no legs, but its arms can reach the ground from its position on top of the equine body, the legs of which have fin like appendages. The torso has a large head – possibly as much as 3 feet (90 centimetres) in diameter – that rolls back and forth