Choosing Race and Stereotype.
Given the particular setting, some Races/Stereotypes are out of place.
No big deal, every Fantasy world has its staples and customs; it's what makes every gaming world different and, we hope, unique.
The most notable difference from traditional Fantasy RPGs is how Race works.
In many games/settings, Race and Stereotype [or simply put, Class] are one and the same, or very closely related.
For example, most fantasy Elves lean towards Wizard class. Most Dwarves towards Fighter class, and so on.
Aygomenian characters are more complex than that. And modern world genetics has yet to be discovered, so you can't be too sure about your race. 😉
Humans.
If you want to keep it simple, just assume you are Morean citizen.
Morean citizens usually hail either from Talanic or Tharagyan Peninsulae.
Their genestock is 90% human, with some traces of elven blood.
They look and behave like our ancestors used to look.
That means they are shorter and leaner than most of us. 😉
Elves and Half-Elves.
Pure-breed Elves either come from Althwyr or from Aygos.
Since both Elven Nations had contacts with Morean Empire - they are both Imperial Provinces, now - citizen exhibiting elven traits are usually referred to as being of Althwyran or Aygosian ancestry.
Althwyr Elves are usually ruddy with honey blond hair. They are taller than humans and slightly thinner.
Aygosian Elves are usually fair skinned, with dark hair and sparkling eyes. They are shorter than the average Morean citizen, and proportionately slimmer.
Depending on how close a given elven settlement is to Morean trade and traffic, Morean traits can show up more ofter or not.
The term "half-elf" is rarely used; people wishing to put an emphasis on their elven origins simply put the patronymic "T'on" before their second name.
Dwarves.
Most Dwarven strongholds lie outside Empire jurisdiction.
They are collectively known as Kathadum, or Kathic Thanates.
Dwarves are usually referred to as Kathes.
Calling a Kathys [plural Kathes] "dwarf" is as derogatory as calling a vertically challenged person a midget.
Besides, Kathes pack steel, and you don't want to enrage one. 😉
Most Kathes sport a finely trimmed and braided beard. It is considered a sign of adulthood to wear one.
They are shorter and stockier than most Morean citizens. It should be noted that Kathic females are NOT as unsightly as in most Fantasy settings. 😀
Since some work within the Empire as Auxiliary troops, or traders, sporting Kathic traits is rarer but not unheard of.
While seldom used, Kathic patronymics are "D'ok" [for males] or "D'or" [for females]; in Kathic fashion, they are usualy affixed to the second name.
Lizard-Kins and Dragon-Kins.
Pure-breed lizard-men and dragon-men are unheard of in Aygomen.
They are, at best, humans exhibiting minor reptilian traits.
Within the Empire, most Lizard-Kin citizens hail from Karkys and Aygyria.
Dragon-Kins are rumored to live in Deyos-forsaken steppes, north and east of Kathadum.
Karkydes are usually tanned, with leathery hide. Few of them still sport scaled skin anymore.
Some still have webbed hands and feet. Short tails are not unheard of.
They are usually shorter than the average Morean citizen, but thick-boned.
Aygyrans sport a dark, rich complexion, and some of them let their hair grow to a flowing jet-black luxurious mane.
Apparently, they come from different ethnicities: some are about as tall as most Morean citizen, but much slimmer.
Others, a smaller group, are a full head taller than most Moreans, and sport a well developed athletic physique.
Typical patronymical for Morean citizen with Karkydis ancestry is "Ahr"; Aygyrans resort to "Wem".
Clearly, some races don't exist at all. Drows are out of place, since they come from a different setting.
So are Kenders, Hobbits, Rakastas, and so on.
It should be noted that most citizens within the Empire are judged by their apparent wealth, by status and nationality.
While strictly speaking an elf, an Althwyran slave is still regarded as property. Race is of no concern.
By the same rate, a well-off Kathic trader is a welcome guest, even if he is only a "dwarf".
Humans are usually referred to by their nationality; since they are the dominant group, it is pointless to stress the obvious.
Stereotypes.
Most non-Spell-Casting Classes are viable.
Magic is usually low-key, and non-existant in Morean citizens' daily life, so Magic-Users, Clerics, Bards, Sorcerers and so on, are out of place.
Devoting one's life to Magia means scrying the future for Omina, omens, or serving a deity and praying for miracles.
Magia works differently from traditional Fantasy magic. It is fairly low powered, and it can't usually produce matter from nothing, or affect large groups, expanses, or areas.
The theory behind Magia involves projecting one's aura, called Simulacra, and touch up the particles reality is made of, the Atoms.
By affecting their inclination, called Klinamen, reality can be changed, to a certain degree.
Klinamic Magia usually revolves around basic elements - fire, water, air and earth - and elemental effects.
Most Morean citizens are not even aware of Klinamic Theories, and they are fully happy not to be.
Fighting Classes usually include Auxiliary, Gladiator, Legionaire, Tracker and Vigil.
Ruffians and Bandits are viable, yet challenging roles.
Non-fighting Classes can include anything, from Apothecary to Zoo-Keeper.
Religious roles are possible, but priests don't benefit from worshipping gods as Clerics do.
Most Sacerdotes like to stay in a place, to serve their deity, rather than roam about, risking their necks to convert the heathens.
Legions can do that way more efficiently...