Hokay, howsabout this?
So far, I think we have:
Ozmar -
Karharath, Psion (Egoist) 5
Someone -
Amalkhad, Soulknife 5
Graf -
Jormal, Barbarian 2/Wilder 3
Mista Collins -
Panitari, Psion (Telepath) 5
ShaggySpellsword -
Selahtari, Bard 3/Wilder 2
So piecing together what we've posted so far on backgrounds, I am gonna throw out some ideas just to get (or keep) the ball rolling. Feel free to edit, comment, etc...
Karharath went off to war in the service of Breland, and nearly got court-martialled. He deserted his station at the end of the war, hoping that he would be presumed dead on the battlefield. Fearing prosecution, he decided to lay low in Amalkhad's village. There the two of them met and discussed their views of the world. Karharath told Amalkhad that he should not be ashamed of the deaths of his enemies. In war, these things are required, and he must keep his eye on the greater good. After all, they were not kalashtar. In Karharath's view, Amalkhad and others like them have a powerful gift, and they must use it to protect the kalashtar from the insidious attacks of the Inspired.
Jorhad is a wild card (literally). He may have been born to a human/kalashtar union and grew up in some of the wilder regions west of Breland. He may have had to deal with orcs and goblinoid raids and frequent battles. Maybe his parents were killed, and he resolved to seek out others of his kind and so travelled eventually to Sharn, hearing that there was a large community there.
Once in Sharn, he found his way to Overlook, and was taken in by the Had clan. He came to the attention of the Enlightened Havakhad, who saw great potential in the young barbarian. Havakhad taught him to begin to harness his wild, untamed psionic potential.
Panitari and Selahtari are sisters (literally, in the kalashtar sense of being from the same clan). They met when Selahtari and her mother arrived in Sharn, where they often practiced or studied together in the kalashtar community in Overlook. Panitari was fascinated with tales of ancient Sarlona, and together the two of them resolved to one day return. The two probably trained under their elder sister, Selkatari, who oversees martial training and monastic discipline at the Gathering Light. (Although, they may not have been the best students, preferring, methinks, less martial arts.)
Shortly after the War ended, the two were asked by Hannamelk (the resident seer) and Selkatari to travel with Jorhad to the edges of Breland in order to discover the fate of Karharath, a soldier who has gone missing. After some searching, the three discovered Amalkhad's village, and found Karharath hiding there. Karharath at first didn't want to leave, but Panitari was able to convince him to follow her (and he may even have fallen for her?) Amalkhad saw this as an opportunity to explore another kalashtar community in Sharn, and so he asked to accompany them.
So the five returned to Sharn, and there received direction from the wise sage, Havakhad, who had a task of particular urgency that needed completion. The five young kalashtar are each eager, for their own reasons, to help Havakhad in whatever this task may be, and having grown to know and trust each other over their recent journey, look forward to working with each other on this "Kalashtar Quest".
How's that? Its a start, anyway...
Ozmar the Questor