In demonology, Valac is the mighty Great President of Hell, having thirty (thirty-eight to other authors) legions of demons under his command. Valac is said to give true answers about hidden treasures; he reveals where serpents can be seen, and delivers them harmless to the magician. He is said to appear as a small poor boy with angel wings riding on a two-headed dragon.
Other spellings: Ualac, Valak, Valax, Valu, Valic, Volac.