Days are Short etc Part 1
Let's explode a couple popular myths about immortals. They are imposing physical specimens. Probably not. Go to a museum with a collection of armor. I stand about 5' 7" (170 cm) and first thing I noticed was I'd have a hard time squeezing into most of those suits. The exception was the suit of a king (I forgot who). That dude was at least 6' (183 cm) and must have been imposing as hell. So your immortal character might a petite person (immortal Neanderthals would be a bit shorter but much wider.) Does your immortality convey regeneration? If not your immortal might show the results of close calls, a missing eye or limb or just be scarred heavily. They might also be a complete mess and a total invalid... waiting for medicine to find a cure. Let's not even get into what gravity could do too a human body after centuries. Eek. They are filthy rich. Assuming they work a few centuries and manage to bank some of it, it's reasonable to assume they are well off.