Nero

Nero is a demon--a fact he will readily admit to anyone with ears (mostly as an excuse for his poor behavior). As the third-born son of the Unspoken Name, he was originally an enemy, before prolonged interaction with humans "poisoned" him with emotions.

Nero has the honor of being Purgatory's only demonic guardian.

Personality
Nero is the worst non-person on earth, specifically because he is so hard to hate. Like most higher demons, he is a magnetic personality, and charming to a fault, easily bending people to his whims. A strategist by nature, he enters most situations intending to come out on top, and he often succeeds. (He's pretty smug about it, too.) While capable of great acts of heroism, he often excuses his better actions as the result of some other selfish intention. In truth, he just likes being the bad guy.

Nero has an unhappy relationship with his conscience, often ignoring it in place of taking responsibility for his selfishness. Though saddled with emotions, Nero remains non-human, often failing to grasp the immorality of his decisions, or foresee how certain actions may do harm. Cocky and snide, Nero can be hilariously self-righteous, and often misunderstands why people are angry with him for his inappropriate behavior. He is a bit of a "project."

Trivia

 * Nero got his nickname from a video game. That the latter half of his name resembled the name of a video game character put the usage into motion. He took it in good humor and adopted the name permanently, largely to prevent the "demon's name jinx" from drawing the attention of his enemies.
 * He has "issues" with his father. Abel attributes this to their similar natures. Nero attributes it to his father being an arrogant, overbearing cock. (Pots and kettles. They really are similar.)
 * Nero is the demon that bought Ravyn's mortal soul. They are on shockingly good terms despite this.
 * As an ethereal, Nero lacks a moral compass almost entirely. He uses this as an excuse for being an insensitive prick, and shamelessly pansexual, among other things.
 * Nero has been involved with Jordan since 2007, though their opposite natures and Nero's bad behavior have threatened the relationship more than once.
 * Nero gets along with just about everyone--except Etheridus, whom he despises. The feeling is mutual.
 * Of all of the Unspoken's progeny, Nero is his favorite. It's half the reason he gets away with opposing him so much, and why he still exists after trading sides.
 * His favorite (non-sexual) pastime is teasing other people. If there's a weakness to point out and chuckle at, he's going to find it.