Yfasue
Yfasue: According to the fifteenth-century magickal text known as the Liber de Angelis, Yfasue serves beneath the infernal king known as the Red Fighter, or Rubeus Pugnator. Both he and his master are demons of Mars, and they are called upon to assist in the construction of the enchanted Ring of Mars. Yfasue lends his powers of destruction to this powerful talisman. Once properly charged, the ring can be used to lash out at enemies and utterly destroy them.
SOURCE:
The Dictionary of Demons written by Michelle Belanger
