Gaap
Tap/Gaap is a high president and prince of hell, commanding 4 of the principal kings and 60 legions, and as powerful as Byleth.
Furcas
Furcas, the 50th spirit is a Knight who appears as a cruel old man with a beard.
Foras
The Thirty-first Spirit is Foras. He is a Mighty President, and appears in the Form of a Strong Man in Human Shape.
Fomorians
The fomorians, whose name means 'dark of the sea,' were a race of Gaelic demons said to be the offspring of Noah's son, Ham.
Focalor
Focalor, the 41st spirit, is a mighty Duke who appears as a man with gryphon's wings.
Flaga
Flaga is a Scandinavian fairy, though some claim she was only a magician who rode on an eagle.