NOBODY. They are lone survivors that work for Hades.
Hellhounds - 2009 TV is rated/received certificates of: Australia:MA (2010) New Zealand:R16
Hellhounds - 2013 was released on: USA: 1 August 2013 (limited) USA: 8 November 2013
Hellhounds, assuming you're referring to the ones in RuneScape, are large dog-like creatures. They are red in color, have a spiked collar, and have black eyes and ears.
Hellhounds
No, my good sir, there is not.
He feeds the hellhounds and polishes his Helm of Darkness.
yes, they are called "Hellhounds"
They never existed, they are only supernatural dogs occurring in mythologies.
Hellhounds can be accessed by non-members, however non-member drops are little to none, being nothing but bones and coins. For members, Hellhounds drop Bones, Level 3 Clue Scrolls and Charms (commonly Gold Charms), as well as Effigies and Spin Tickets. Hellhounds can also drop Ferocious rings in Kuradal's dungeon.
地獄の猟犬 Jigoku no ryōken
No and by the way they're called hellhounds.
Hellhounds, Medusa, and Hades (technically, he is not a monster, he is a god)