This character is strictly an NPC.
His father, who was a mad wizard, invoked an epic spell ritual of sorts that transformed part of the life essence of a captured leShay (see Epic Level Handbook) into his child.
The Mad Wizard had 6 children and 7 captured leShay. However, when he attempted to invoke this ritual on himself (his last ritual), the experiment went wrong....very wrong. The madness opened up a portal to the Far Realm which sucked the Mad Wizard, as well as his stronghold, beyond Time and Space....
Fortunately the one leShay (another NPC) got away as the epic spell's blast of energy flung her out the stronghold's window (perhaps the god's felt mercy on her soul) as well as the 6 six children. The mother ran away with the children while the Mad Wizard was performing his final experiment.
Anyway, that is the general background. And to answer one of the poster's questions, I've been Dming for over 18 years. I hope his/her question wasn't meant to be 'offensive'.
The damage reduction may not be necessary, and I could certainly lessen it or remove it entirely. The main things I wanted were the immune to aging, poison, and disease, the low light vision, and the polyglot feat.
I'll most likely go with +4 ECL. +1 for immune to aging. +1 for immune to poison and disease. +1 for low light vision. And +1 for polyglot feat.
Let me know if any of you have further thoughts.
Thanks!
- Kae.