When in doubt, you can always ask the DM. Usually they'll tell you their reasoning for the shift. Sometimes it may be a misunderstanding, then the shift can be removed.
For me, the idea of having good aligned Vampires is to far of a stretch. I think all players who decide to turn their PC into a undead should be made aware that they will have to play a evil aligned character. As appealing as it may be to buck the trend of a evil vampire and RP out the player resisting his evil nature, i feel it is a dangerous road to travel down. Once the precedent is set that undead or other evil minions can infact remain good do to IC actions, we will soon have many players acting in a OOC way to perserve their alignment. Undead have no mortal feelings, they are corrupt beings that have no resemblance of their former human emotions, thoughts or desires and should act in a way befitting that concept. They are also cold to the touch and lifeless. It may take some time for the Evilness to fully manifest itself but any attempt to stop the transformation should end up in futility. This is in no way a criticism of how the player has RP'd his character so far, but my two cents on the possibility of good alignment vampires.The underlined italicized bolded text is untrue for many intelligent undead.
Most intelligent undead retain enough memory of their former
lives to know that their acts are horrendous. Some may even
feel pangs of guilt, even going so far as to capriciously allow
surviving victims to go free. This act becomes more likely if the
undead is a feeder that has recently fed on its preferred morsel.
However, when the hunger mounts again, as it must, the undead
may curse its generosity, again seeking out those it previously
allowed to escape.
:arrow: Acts of Violence
Assault, Unprovoked
Assault, Grievous
Betrayal, Major
Betrayal, Minor
Extortion
Lying
Murder, Brutal
Murder, Nonbrutal
Theft, Grave Robbing
Theft, Major
Theft, Minor
Threats of Violence
Torture, Routine
Torture, Sadistic
:arrow: Unholy Acts
Breaking a Tenet
Breaking an Oath
Breaking a Vow
Defilement
Desecration
:arrow: Supernatural Evil
Laying a Curse
Casting an Evil or Necromantic Spell
Using an Evil Magic Item
Bearing an Evil Magic Item
Crafting an Evil Magic Item
The Objective approach
This is the straightforward approach taken in the D&D game, and it is the one stressed in this book as well. From this frame of reference, evil can be judged objectively. The evil nature of a creature, act, or item isn’t relative to the person observing it; it just is evil or it isn’t. This clear-cut definition allows spells such as holy smite to work. Conversely, an objective definition of evil exists because the detect evil spell works. Want to know what’s evil? Don’t study a philosophy book, just watch who gets hurt when the cleric casts holy smite. Those creatures are evil. The things they do, generally speaking, are evil acts. If your character still isn’t certain, he can summon a celestial creature or cast a commune spell and simply ask, “Is this evil?” The higher powers are right there, ready to communicate. The Player’s Handbook says, “ ‘Evil’ implies hurting, oppressing, and killing others. Some evil creatures simply have no compassion for others and kill without qualm if doing so is convenient. Others actively pursue evil, killing for sport or out of duty to some evil deity or master.”
This objective approach to evil works well for fantasy roleplaying games. Evil is a thing that a hero can point at and know he must fight. An objective concept of evil allows players (and their characters) to avoid most ethical or moral quandaries, particularly the kinds that can derail a game session. If you run an adventure about fighting gnolls, you don’t normally want the entire session consumed by a philosophical debate about whether killing gnolls is a good thing or a bad thing.
As a side note i will gently ask DM'tem to make sure they have the backgrounds and religions right if dealing out chaotic points for deviating off the path.
Lathander faith in Faerun (where aran is from) deal in destroying the EVIL undead.
Thus Aran dont differ from the faith in question, still opholds his lawfull ideals so far and in my opinion shouldnt be dealt Chaotic points just for being what he is (as he have gotten quite a few)
:-)
i might be wrong then correct me
but i do know my faith, i do know the history of it both ravenloft and faerun, and there are many more layers than usually percieved :-)
aran
Destroy the foul undead wherever you find them, for they are the enemies of the dawn.
If Aran in his vows as lightcarrier swore to uphold the faith of the morninglord then that replaces his original worship of Lathander, which, I think, is the point Robert was making.