Races in Aeleon

Most of the core races you find in other campaign worlds exist in Aeleon. This stems from the fact that most of the beings who exist on Aeleon trace their heritage to other worlds. While the truth of that has been lost from public knowledge, there remain a few who still know the truth.
Which worlds, exactly, each race has originated from is entirely up to you as Game Master. There are a few fragments detailed elsewhere which set some guidelines, but the details are up to you. For example, the information about the continent of Herbreous indicates that each of the six clans of elves arrived from a different world. They have long since blended their lines through intermarriage, but the origins are diverse. The same applies to other races.
There are two significant differences between Aeleon and most traditional fantasy campaign settings. The first is that orcs are not an inherently evil race and are considered a full core player character race. The second difference is that intermarriage between races is fairly common and accepted. See the section on Half-Bloods for more information on this.