Source: Player Core pg. 78
Archives of Nethys: Nephilim
Nephilim are influenced by the divine magic of the Outer Sphere, often with fiendish or celestial features.
Countless legends tell of mortal dealings with immortal beings, and of the children born from those encounters. These children, known as planar scions, are mortals who inherit the supernatural essence of another plane, which manifests through their distinctive physical features and otherworldly powers. This section presents rules for nephilim, planar scions who can trace their extraplanar heritage back to celestials, fiends, monitors, and other entities who often become involved in the religious affairs of mortals.
A faithful priest of Erastil is visited by an angel in his youth, and many years later he fathers a child with the head of an elk and a birthmark shaped like Erastil's religious symbol, a bow and arrow. A powerful sorceress prevents an incursion from the Outer Rifts, but a sliver of demonic power infuses the child she carries, who is born with fangs and a pair of tiny horns. A planar caravan travels the Multiverse until its ranks are filled with children who possess devilish hooves and angelic halos. These children, known as nephilim, possess the ambition and capacity for growth and change inherent in their mortal forebears, while also possessing some portion of the power and appearance of an immortal entity or entities whose energies influenced their bloodline.
Nephilim are difficult to categorize by nature. Some possess both demonic and angelic traits, while others possess abilities that defy the neat categories of scholars. Many nephilim do have traits that strongly point to their lineage, though. Nephilim who carry the power of archons, sometimes known as lawbringers, may display golden eyes or flaming auras, while nephilim descended from devils, known as hellspawn, may have red skin and hooved feet.
While the term nephilim broadly describes these individuals, some cultures use the name empyrean or cambion to refer to nephilim with celestial influence or fiendish influence respectively. Other nephilim sometimes earn the names of aphorite or ganzi, though this entry only focuses on empyreans and cambions.
If you want a character who is supernaturally infused with the power of the Outer Planes, whose appearance is striking and notable, and whose personal connections might extend beyond the bounds of the Universe, you should play a nephilim.