Most recent alignments from D&D 4th, not a straitjacket just a guide to motivations, for example a more chaotic unaligned would not always be apathetic to certain acts, good people aren't always kind just predisposed to it.
The Lawful Good Alignment EditAn ordered society protects us from evil.
If you’re lawful good, you respect the authority of personal codes of conduct, laws, and leaders, and you believe that those codes are the best way of achieving your ideals. Just authority promotes the well-being of its subjects and prevents them from harming one another. Lawful good characters believe just as strongly as good ones do in the value of life, and they put even more emphasis on the need for the powerful to protect the weak and lift up the downtrodden. The exemplars of the lawful good alignment are shining champions of what’s right, honourable, and true, risking or even sacrificing their lives to stop the spread of evil in the world.
When leaders exploit their authority for personal gain, when laws grant privileged status to some citizens and reduce others to slavery or untouchable status, law has given in to evil and just authority becomes tyranny. You are not only capable of challenging such injustice, but morally bound to do so. However, you would prefer to work within the system to right such problems rather than resorting to more rebellious and lawless methods.
Examples - Superman, Arguably L from Death Note, Captain Vimes from the Discworld Novels (in later incarnations), Subaru and Silver Knight from .hack//SIGN.
The Good Alignment EditProtecting the weak from those who would dominate or kill them is just the right thing to do.
If you’re a good character, you believe it is right to aid and protect those in need. You’re not required to sacrifice yourself to help others or to completely ignore your own needs, but you might be asked to place others’ needs above your own... in some cases, even if that means putting yourself in harm’s way. In many ways, that’s the essence of being a heroic adventurer:
The people of the town can’t defend themselves from the marauding goblins, so you descend into the dungeon—at significant personal risk—to put an end to the goblin raids.
You can follow rules and respect authority, but you’re keenly aware that power tends to corrupt those who wield it, too often leading them to exploit their power for selfish or evil ends. When that happens, you feel no obligation to follow the law blindly.
It’s better for authority to rest in the members of a community rather than the hands of any individual or social class. When law becomes exploitation, it crosses into evil territory, and good characters feel compelled to fight it.Good and evil represent fundamentally different viewpoints, cosmically opposed and unable to coexist in peace. Good and lawful good characters, though, get along fine—even if a good character thinks a lawful good companion might be a little too focused on following the law, rather than simply doing the right thing.
Examples - Spiderman, Edward Elric from Fullmetal Alchemist, Matsuda from Death Note (Before he flips out and perforates you-know-who), Bear, Mimiru and Crim from .hack//SIGN.
The Evil Alignment Edit
It is my right to claim what others possess.
Evil characters don’t necessarily go out of their way to hurt people, but they’re perfectly willing to take advantage of the weakness of others to acquire what they want.
Evil characters use rules and order to maximize personal gain. They don’t care whether laws hurt other people. They support institutional structures that give them power, even if that power comes at the expense of others’ freedom.
Slavery and rigid caste structures are not only acceptable but desirable to evil characters, as long as they are in a position to benefit from them.
Examples - Megatron, Light Yagami from Death Note, Emporer Palpatine, Vorbis, Trymon, and The Auditors from Discworld, Professor Moriarty, Morganna from .hack//SIGN.
The Chaotic Evil Alignment Edit
I don’t care what I have to do to get what I want.
Chaotic evil characters have a complete disregard for others. Each believes he or she is the only being that matters and kills, steals, and betrays others to gain power. Their word is meaningless and their actions destructive. Their worldviews can be so warped that they destroy anything and anyone that doesn’t directly contribute to their interests.
By the standards of good and lawful good people, chaotic evil is as abhorrent as evil, perhaps even more so. Chaotic evil monsters are at least as much of a threat to civilization and general well-being as evil monsters are.
An evil creature and a chaotic evil creature are both opposed to good, but they don’t have much respect for each other either and rarely cooperate toward common goals.
Examples - Kefka, Johan from Monster, The Joker (especially in The Dark Knight), Mr Teatime from Discworld, Sora from .hack//SIGN (prior to his redemption).
Just let me go about my business.
If you’re unaligned, you don’t actively seek to harm others or wish them ill. But you also don’t go out of your way to put yourself at risk without some hope for reward. You support law and order when doing so benefits you. You value your own freedom, without worrying too much about protecting the freedom of others. (Chaotic leanings).
A few unaligned people, and most unaligned deities, aren’t undecided about alignment. Rather, they’ve chosen not to choose, either because they see the benefits of both good and evil or because they see themselves as above the concerns of morality. (True Neutral leanings)
Chaotic Examples - Captain Jack Sparrow, Mello and (maybe) Ryuk from Death Note, Discworld Elves (no concept of morality, no empathy, completely whimsical), Puck, Dr Gregory House, arguabely TNG Romulans, The Eldar from Warhammer 40k (but only to outsiders...), Sora from .hack//SIGN (post redemption).
Neutral Examples - Near and (maybe) Ryuk from Death Note, Seto "screw the rules" Kaiba, Captain Barbossa, Vulcans, Warhammer's Wood Elves, Tsukasa from .hack//SIGN.
Alignment vs. Personality Edit
Isn’t alignment just another part of your personality? Yes and no.
Certain personality traits have moral weight, particularly those that influence how you interact with others. Cruelty and generosity can be considered personality traits, but they’re also manifestations of your beliefs about the importance and worth of other people. A character who aspires to good might have a cruel streak, but if that streak manifests too frequently or in extreme ways, it’s hard to say s/he is really upholding their moral ideals.
Other personality traits have no moral weight at all. A fastidious and well-organized person can just as easily be evil as good. An impulsive prankster can also be good or evil. These quirks of personality are mostly unrelated to alignment, but your alignment might affect the way your personality translates into action. An evil prankster might favor cruel practical jokes that cause personal harm and damage property, while a good one would steer away from such injurious acts.