Humans (also known as Zarians) on Aldrazar are widespread, can be found in most regions and, in general, are fierce and disagreeable, which can sometimes lead certain other races to view them with contempt. They are renowned for their diversity and ambition, and although they lack specialization, they can excel in many areas.
The origin of humanity is something yet unknown. Although the High Elves can claim the primal war between Corellon and Gruumsh for their heritage and the dwarves claim to have been forged from the rocks of Aldrazar itself, humans have no unifying creation myth besides the origin of all life on Aldrazar itself. However, they are certainly an ancient race, having originated since before written records exist and they are frequently considered to be the true children of the creator race. More confusing yet is that, while humans indeed are native to Aldrazar, they have been found on other worlds as well, including Mystara, Toril, Rical and many more worlds throughout the cosmos.
Regardless of their precise origins, humans have been undeniably successful. While hardly the only dominant race of Aldrazar, humans are one of them and the most recent to obtain dominance. In spite of this strength, or perhaps because of it, humanity is an eternally fractured and divided race, broken up into over a dozen ethnic offshoots. It is believed that this is in part because humanity, unlike most other races, did not emerge as a whole but rather in several places at once, thereby resulting in its diversity.
Humans are kin to many races, such as Githyanki and Githzerai. Additionally, humans have bred outside their race many times, resulting in the various half-human races like half-elves, half-orcs and Dragonborn as well as planetouched such as Tieflings and Aasimar.