He is very friendly to all who enter the underworld but very agressive to all who attempt to leave. He likes eating, and is very playful.
He has a huge black dog body and three heads. His tail is a giant snake, and he is known to have a mane made of smaller snakes
Tips for demigodsEdit
If you enter the underworld, he likes to play fetch. He loves cake, so if your trying to leave, cake with a sleeping draft works everytime.