Alassa is a One-Day NPC for Baldur's Gate 2, an evil thief who knows how to get what she wants. Alassa requires Throne of Bhaal to function.
The current version is v1

Allison is a contribution to the One-Day NPC project. The entire mod was actually completed in about seven hours. Allison is a True Neutral druid who is extremely friendly and somewhat playful. She is one of the very few mods that allow for a lesbian romance. She'll probably remind you of an overly affectionate Imoen.
The current version is v1.6

After parting ways in Baldur's Gate you find Alora in Ribald's store up to her old tricks of stealing. She'll be happy to see you and ask to join the party when she hears about Imoen's ordeal.
The current version is v1.01

Although it is evident that Amber has seen many strange things in the past, the offspring of a dead cat is definitely something new to her. The curiosity she feels might be reason enough for her to stick around for a while, but whether she will find reasons to stay will remain to be seen.
The current version is v2.5

Angelo Dosan is the fighter-turned-mage who served as your brother's henchman in Baldur's Gate. You may remember that he sentenced you to death and fought against you in the Undercity, and if you were lucky enough to mine the content, you may remember that he is Shar-Teel's father. Most likely he didn't survive your game, but people in this world seem to have a knack for not staying dead.
The current version is v3

Ariena a female half-orc Neutral Evil Pit-Fighter. She swears that she will kill all oppose or wronged her, as she learned that nothing else helps but cold steel to get her point across. It is possible to initiate romance with this character, but it requires repeatedly asking the same question until a certain answer is received. (Obvious from the earlier dialogue). Once initiated, the romantic dialogue is surprisingly interesting and quirky.
The current version is v2

One of the things that makes BG2 so enjoyable are the NPCs in your party, and how their background and your character's relationship with them add so much more depth to your own storyline as well as your gaming experience. This mod will add Auren, a joinable NPC. Auren is a female human fighter of neutral good alignment.
The current version is v6.2

Azure NPC Romance Mod adds to the game a new NPC - the druid Azure, and her wolf guardian, Sharo.

Banana! is an original NPC Mod who will join your party and probably scare the crap out of you. It is in fact as shitty as it sounds.
The current version is v1

Kova, a mage/thief with an unsavoury background and good heart (or so he claims), and a law-enforcing, impartial (or so she claims) archer called Kiyone, comes together to join the party in this intriguing Mod about proving one man's innocence against the odds, and about the unlikely yet strong bond formed between the two people, so different yet so much alike.
The current version is v1.35

Biddekelorak is an old dwarven priest of Lathander. He is quite devout and good-hearted. The most important thing to him is shining Lathander's light into the dark places of the world.
The current version is v1

Created as a live collaboration between St. Josephine and jcompton, in about one hour, Britt is an eager young woman who says she wants to be an adventurer. Except, it never seems to quite work out.

One of the famous one day NPC mods. You get a human skald bard, a few interjects, an epilogue, some banters with NPCs, and custom items.
The current version is v1.02

You have an annoying cleric hitting on you, your father is drunk and hitting mommy again, everyone seems to be trying to kill you, and you think your girlfriend might be sweet on your sister. It's just one of those days in Amn.
The current version is v1.2

Since Fade was brought up as a noble of House Dlardrageth, she learned little of morality until she was much older, and she still finds some of morality's finer points beyond her. She will use all resources available to her to get her own way, and if this includes herself, so be it. She can be cruel and abrasive, but also loyal and generous. She is neither good nor evil, and will, for example, one day give all her money to feed a starving family, only to murder them and steal their belongings moments later. (You do not get back the money which she has donated)

This mod adds an NPC cleric of Lathander to the Baldur's Gate conversions Baldur's Gate Tutu and Baldur's Gate Trilogy. Meet berelinde's Gavin at the Temple outside of Beregost, and find a lifelong friend, companion, or even a little romance... Gavin comes with friendship, romance, and banter, as well as close harmony with The BG1NPC Project.

When you meet Ghareth in the City Gates area of Athkatla he has just left the employ of the Cowled Wizards... after spending some years with them, first as a menial labourer and later a low- ranking Enforcer, he has seen too much corruption and abuse, and decides to do something about it. The abduction of Imoen was the last straw, so he turns to you for mutual aid. Gareth is an excellent character to have in your party, up until your encounter with Bodhi. At this point, he is revealed as a ghoul, and will attack your party, casting at least two dire charms in the course of the fight, and level draining on some hits. Ideally he should be replaced in the party before this point, as there are no quest bonuses to winning the fight with him in your party.

Ghreyfain's groundbreaking mod that started a revolution! Goo is the world's only floating eyeball NPC for BG2, bringing yak-stunning breath and a witty exchange with Jan to your party. Heard about Ghreyfain's stunning voice acting, and the mod's unforgettable single banter? It's all here!
The current version is v3

What would you do if you woke up one morning as the opposite sex? When you meet Haldamir, he's trying to figure that out. He is a moon elf of Cormanthor, and spent his life defending it against invaders... right up until the moment a wild surge from some nearby spellcasting changed him forever. Will you help him adapt? Can you teach him to believe?

Hessa is a One-Day NPC for Baldur's Gate 2, an evil half-elf thief, and a preview of things to come in the Surayah mod. Hessa requires Throne of Bhaal to function. Hessa requires starting a new game.