See the full list of possible traits here.

• Craven - This character runs faster backward than most can run forward.
• Wrathful - This character becomes irritated quickly, and their decisions are often largely influenced by their many frustrations.
• Lazy - This character does not see the value of effort and excellence, and instead prefers shortcuts and the path of least resistance.
• Vengeful - This character keeps receipts of other people's deeds.
• Shy - This character is perfectly capable of attending social events, just not at the same time as anyone else.
• Honest - This character values truth above all, speaking plainly even when the words are uncomfortable or unwelcome.
• Arrogant - With an inflated ego like that, it's not surprising this character hardly sees anyone but themselves.
• Just - A stalwart of fairness, this character applies rules evenly and acts as a moderating force in conflicts.
• Impatient - This character regards waiting as a personal affront to both themselves and the universe.
• Paranoid - If a betrayal didn't actually happen, this character will force or stage one just to make sure that their fears are confirmed.
• Cynical - This character generally expects the worst and they're rarely disappointed.
• Sadistic - This character enjoys seeing rules and expectations applied with a creative cruelty for those who they think deserve it.
• Fickle - This character has a hard time to commit and will change their mind constantly, often leaving others guessing.
• Stubborn - This character refuses to bend, mostly out of principle, occasionally out of habit.
• Eccentric - This character approaches life from an unusual angle, often to the mild confusion of those around them.
• Sleeping Dog - This character bites. For your own good, leave them be. They do not need to be greeted.
• Cat - This character expresses affection on their own accord and will spend time with you when they feel like it. Treat them like a cat: Enjoy it when they're there, give them space when they're not.
• Depressed - This character's battle is in their brain, and their brain won't let them rest.
• Comfort Eater - Indulging in food, too much, unhealthy, seems to help this character manage some stress. At least temporarily.
• Reclusive - Barely ever seen, this character is stressed in social situations and prefers to be where they will be left alone. The safe, cold hands of solitude.
• Irritable - You're on thin ice? No, this character has pre-broken any ice you could be on.

An explanation of these can be found here.