With skills, The Dunmer is a helpful race for thieves and assassins, as they offer a good balance of stealth and magical talent. The Dunmer also fits perfectly for the offensive magician playstyle. With an improved resistance against fire, one could use the Dunmer's Destruction skill bonus to deal damage and develop a strong Alteration for protection. Restoration spells might also be useful, while Lockpicking and Sneak would remain as secondary skills.
A male and female Dark Elf