All races that are redeamable are normally born Principled & Scrupulous. This means that life changes them. So don't pick an alignment without knowing how you got there.
Most players (when allowed) choose an alignment to play their character with the most amount of choices. While not bad it is often the choices we force our characters to make against the player's better judgement that make characters really come alive and stand out.
There are two categories Good and Evil. Good has four variations, Principled & Scrupulous, Scrupulous, Selfish and Anarchist. Evil has three variations Miscreant, Aberrant, and Diabolic. You can choose one. Read below for what they can and can't do and choose one that best fits your character.
First of all, there is no such thing as an absolute or true neutral. All people tend toward good, evil or self-gratification. An absolute true neutral could not make a decision, go on an adventure, kill, or take any action of any kind without leaning toward good, evil or self-gratification.
It is humanly impossible and is, therefore, eliminated in the context of this game. (I realize that some of the philosophers out there may disagree with this, but that's a topic for philosophical debate and not a factor of this game).
Because a character is of a good alignment, it does not make him/her a saint. Good characters can be just as irritating, obnoxious, and arrogant; even prejudiced and full of quirks. However, life and freedom are of the highest priority. Such a person can always be trusted in a life and death situation.
Principled characters are, generally, the strong, moral character. Principled characters will...
Scrupulous characters value life and freedom above all else, and despise those who would deprive others of them. This type of hero is typically portrayed in many Clint Eastwood and Charles Bronson films; the person who is forced to work beyond the law, yet for the law, and the greater good of the people. They are not vicious or vindictive men, but are men driven to right injustice. I must point out that these characters will always attempt to work with or within the law whenever possible.
This, basically, good person tends to be selfish, greedy, and holds his/her personal freedom and welfare above almost everything else.
He/she dislikes confining laws, self-discipline and distrusts authority. This is the Han Solo, Star Wars, character. The guy who is always looking for the best deal, associates with good and evil characters, is continually tempted to lie and cheat, and hates himself for being loyal and helping others. Unprincipled Characters Will . . .
This type of character likes to indulge himself in everything. He is the insurgent, con-man, gambler and high roller; the uncommitted freebooter seeking nothing more than self-gratification. This character will, at least, consider doing anything if the price is right. These people are intrigued by power, glory and wealth. Life has meaning, but his has the greatest meaning. Laws and rules infringe on personal freedom and were meant to be broken. An anarchist aligned person is always looking for the best deal, and will work with good, selfish or evil to get it; as long as he comes out of the situation on top. The anarchist is continually teetering between good and evil, rebelling, and bending the law to fit his needs. Often mercenaries fall into this category.
All evil characters are not bent on universal genocide or domination over all living creatures. They are not all maniacal people actively seeking to harm innocent people. Nor are all evil characters sadistic and untrustworthy. Many evil characters may actually seem kind or likable.
There is nothing wrong with playing an evil character, although he may not survive too long if he betrays or harms too many people. This is fantasy role-playing, not reality. You can play any type of character you desire, just continue to play in character.
Evil alignments are a step beyond the self-gratification of the selfish alignments. Evil characters are ruthless individuals who are willing to say or do anything to achieve their goal. Human life has little meaning to them, and friends tend to be (but not always) people to use, and discard when they are no longer of value. Evil aligned people do not automatically slay any good aligned person because of different ethics and philosophy. All the better to use good to achieve their own goals, for the end always justifies the means.
This self-serving, unscrupulous character is out only for himself. Power, glory, wealth, position, and anything that will make his life more comfortable is his goal. It matters not who gets caught in the middle, as long as he comes out smelling like a rose. This person will lie, cheat and kill anyone to attain his personal goals.
Miscreant Characters Will . . .
The cliche that there is "No honor among thieves." is false when dealing with the aberrant character. This is a person who is driven to attain his goals through force, power, and intimidation. Yet the aberrant person stands apart from the norm, with his own, personal code of ethics (although twisted ethics by the standards of good). He expects loyalty from his minions, punishing disloyalty and treachery with a swift, merciful death. An aberrant person will always keep his word of honor and uphold any bargains. He will define his terms and live by them, whether anyone else likes it or not.
Aberrant Characters Will . . .
This is the category where the megalomaniacs, violent, and most despicable characters fall. This is the cruel, brutal killer who trusts no one and has no value for anyone or anything that gets in his way. Aberrant aligned characters find these dishonorable people just as revolting as a good aligned character.
Diabolic Characters Will . . .