Shadow King
Grand master of the Order of Talos.
There are a few Batman ideas you can incorporate into your Skyrim experience.
Female khajiit who becomes a thief (Catwoman)
red haired alchemist who uses lots of poisons (Poison Ivy)
Ice magic and heavy armour (Mr. Freeze)
Create a male with asymmetrical facial features and flip a coin to choose between persuade and intimidate and other such decisions(Two-face)
Heavily built Argonian (Killer Croc)
Mage specializing in fear spells and other illusion magic (Scarecrow)
The two face idea with using a coin to make decisions is amazing.