Horus is one of the oldest Egyptian gods, possibly reaching back to predynastic times. His conflict with Set, the desert-god, was one of the basic myths of Egyptian religion, long before Horus joined to the Isis-Osiris family.
This post covers the darker side of Helios‘ family. These include Circe, Pasiphaë, and his granddaughters Medea and Hecate. Unlike his brighter descendants, who were mostly the children of Klymene, these were the children of Perseis, an Oceanid nymph. (Her name comes from the word persô, meaning to destroy, slay, ravish, or sack with fire, so perhaps her dangerous offspring shouldn’t be a surprise.)
Helios, the Greek sun-god, doesn’t get much press. Compared to the oracle-god and plague-sender Apollo, he gets hardly any. I remember once watching Jeopardy with friends and being unable to convince anyone that Helios was the sun-god, not Apollo. (I was a bit disappointed in Alex Trebeck.)
The problem that Helios faces is that he is the sun; his name means “sun” and his role in Greek myth is to rise, shine and set every day. Unlike Apollo, he is too predictable to need buying-off. In the Odyssey, when his cattle are stolen Helios has to convince Zeus to raise a storm to punish the thieves. Apollo would’ve shot ’em full of arrows.