Myriden Race - Halfbreeds

Goliaths
Descendants of the Giant Kings of the Stone Kingdom, the tribes of goliaths have neither a place in the civilized world, nor in the lairs of giants. They have been forced to dwell in the barren peaks of the world, where the air is thin and where existence is treacherous. The goliaths welcome the challenge this presented them, the ongoing struggle for survival ensures that only the strongest among them continue their traditions.

Half-Elf
Descending from elves and humans, half-elves are a vital race in which the best features of elves and humans often appear. Half-elf PCs are of innumerable origins. Being that they are of two races, yet neither, some half-elves form communities with other half-elves in an attempt to find some sense of unity. Others seek to spend their time in as diverse settings as possible.

There are a number of half-elves in the Five Dales. Several are farmers and herders; others are artisans within the various dales. Most half-elf PCs would be native to Riverdale.

Half-Orcs
Possibly available, given a strong enough character concept

While there have been legends of half-orcs who were bred by those who wished to cultivate the ferocity of orcs with the cunning of humans, the majority of half-orcs are a story of brutality. If you ask a half-orc about his origin, you are as likely to hear a story of a misfit child needing to prove himself amongst humans or orcs as you are to get a punch in the mouth or a knife to the throat.