Id say. keep it simple, keep it consice, keep it real. Show merits, show flaws, give them quirks. Show there is more to them than the first impression, there is more beneath the surface. Be proud of victories, but also never ashamed of defeats. Also show that for whatever they have gained, there has always been a price to pay. In short, make them (meta) human.
Just my .285734 cents, after taxes.