[Taqwus]

Two of the T'ien C'hi immortals, at least, have rather high lifespans compared their starting ages.

The healer, for instance, has an Old Age threshold of 2000 years, IIRC, and might be younger than 1000 -- unless being caught by Decay after Decay, they're unlikely to age out. The swordsman has at least a couple hundred years to go, IIRC.

The one TC immortal with Old Age is the Master of the Iron Crutch, who's also somewhat less useful due to his lousy mobility (the other two can fly) and his leprosy and cursing auras.

(Hm. That's Early Era. It would be interesting if they had older starting ages in the Late Era, if they're the same heroes that is.)