Astarion

Astarion has the demeanor of a charming and confident nobleman with a biting wit. He enjoys making sarcastic remarks and japes at other people's expense, all the while acting smug and haughty. His decades of being a vampire have left him with a lack of moral scruples compared to the more upstanding members of the party, making him come off as ruthless at best or outright sadistic at worst. While he does attempt to suck the player’s blood non-consensually during one of the first long rests after recruiting him, he does respect the player’s decision regardless of whether it is to allow him to drink or forbid him from drinking their blood.

At the beginning of the game's story, Astarion has recently escaped his abuser and discovered that sunlight no longer hurts him. As such, he comes off as reckless and hedonistic at times, wishing to enjoy his newfound freedom as much as possible. He shares this outlook with fellow party member Karlach. Once it is discovered that his immunity to sunlight is due to the Tadpole, Astarion is less excited than the rest of the party at the prospect of destroying the tadpoles, instead wishing to find a way to wield their power instead.

Tragically, his demeanour belies the trauma of decades of abuse. Astarion's sire, the vampire lord Cazador, performed horrifically depraved acts on Astarion that left both physical and psychological scars. He is utterly ruthless in his pursuit of revenge on Cazador and is not afraid to commit acts of cruelty or deception in the pursuit of that quest, being one of the few party members enthusiastic about making a pact with Raphael. The crux of his personal quest is whether he will follow in Cazador's footsteps and steal the power of the Vampire Ascendent for himself or kill Cazador and stop the rite. Astarion was a young magistrate in Baldur's Gate, until one day he was assaulted and almost killed by a gang of Gurs. The vampire lord, Cazador Szarr, who had taken interest in him, approached Astarion and turned him into one of his slaves – a vampire spawn.

After being turned, Astarion and his vampire spawn siblings lived at the Szarr Palace in the city. Cazador held complete control over his spawn, able to "puppet" their bodies and bend them to his will. He used this power to torment Astarion, torturing him physically and emotionally for centuries. At his command, Astarion was himself seducing the nobility of Baldur's Gate, luring young aristocrats back to be fed on by his master.

Unbeknownst to Astarion, Cazador had secretly made a deal with the archdevil Mephistopheles to invoke the Rite of Profane Ascension. Szarr was to siphon the life force of seven thousand souls, Astarion's included, to become a vampire ascendant.

Before the vampire lord's plans could come to fruition, Astarion was kidnapped and infected with a special illithid tadpole. And so, Astarion's journey to freedom from his master could begin...