Humans (or "hyuuuuuumans," as they are sometimes known) are...
...Oh come on, you already know about humans. They're those uppity hairless primates who walk on two legs and play too many video games. These nosy, noisy omnivores are capable of great deeds or astonishing idiocy. Given a particular world or resource, it requires tremendous discipline and willpower on their part not to gradually spread and consume all of it. While this Arcanos-like behavior has a certain self-destructive fatalism to it, it has also done much to guarantee the survival of the species, projecting them out into the universe in a variety of ways.
Humans are common throughout the worlds. While probably originating on Earth, populations have been found in such distant places as Ronoran, Thrudmadra, the Lily Garden, and Hell, and it is possible that the inhabitants of Nera were once human as well. Given the fact that these populations usually have cultures that bear an uncanny resemblance to ancient Earth cultures, it is very likely that they actually originated on Earth and somehow magically wound up elsewhere, whether willingly or by accident.
While humans bear an uncanny resemblance to the Vir, the two species share no genetic ancestry. The Vir checked. Thoroughly.
The following characters are human, or at least are probably human. Questionable candidates will be marked with an asterisk: