|Nationality||The Southern Isles|
|Hair color||Dark copper|
|First appearance||Frozen: The Kingdom of the Sun|
Radulf is defined by his obsession with order and cleanliness. He goes through life seeking absolute perfection by taking every opportunity to force discipline, hygiene, control and symmetry upon a world of chaos, even if it must be done piece by piece. Intelligent but inflexible, Radulf approaches everything from a logical frame of mind. The prince has nothing but distain for emotions, and considers himself superior for it. However, Radulf has a low threshold for stress, and being unable to quickly resolve discord or perceived exposure to germs will send the prince into a meltdown. Fittingly for such a man, Radulf works as King Klaus' attendant, majordomo of the Royal Palace, and chief bookkeeper of the Southern Isles' finances.
Radulf is a tall and slender man in his mid thirties with fair skin and angular features. His eyes are olive green, and he wears oval spectacles, which are apparently just for aesthetics. His profile reflects his orderliness, as his coppery-brown hair is neatly trimmed and oiled in place, and his suits are always clean and pressed.
- Radulf's name, an archaic form of Ralph, is Germanic for "council of wolves."
- Radulf is legally married, but it is strictly a marriage of convenience. He and his unknown wife had agreed beforehand to only spend time together when appearances demanded it.