They had that whole conflicted by their nature thing going for them, and I used a metric fuck-ton of them for my Valendia I campaign. I made a set of boss-level NPCs that each represented one of the seven deadly sins. The plan was to have them all be recurring villains all the way up until epic level, but that idea didn't pan out. I had to end the campaign early, and so I created a very abridged sort of ending for it. I used them as a series of boss encounters leading up to the final boss instead.
Not truly as epic as it could have been, but it still ended up pretty fun.
I think I might be making too many characters with the Outlander background, though. I'm having a hard time coming up with a Bond for this character, though. I really think he's having trouble finding something to latch on to, hence the wandering.
Tiefling Ranger 1
Speed 30 ft.
AC 13 (+1 Armor, +2 Dex)
Saving Throws: Strength, Dexterity
Longbow +4 ranged 1d8+2
Str 13, Dex 15, Con 12, Int 9, Wis 14, Cha 12
Class Features: Favored Enemy (Elves and Orcs), Natural Explorer (Underdark)
Racial Features: Darkvision, Resistance to fire, Infernal Legacy (Thaumaturgy cantrip)
Skills: Stealth, Survival, Perception, Athletics, Nature
Languages: Common, Infernal, Elven
Proficiency Bonus: +2
Armor: Light, Medium, shields
Weapons: Simple weapons, martial weapons
Leather Armor, 2 Shortswords, Explorer's Pack, Longbow, 20 Arrows, belt pouch, 10 GP, hunting trap, quarterstaff, set of traveler's clothes
Background: Outlander - exile/outcast
Wanderer - Recalls maps and geography, can find food and fresh water for self and five other people
Ideal: People think they're bigger than nature, when they're really just a part of it.
Bond: Maybe eventually.
Flaw: Sees no reason to save people who can't save themselves.
Satyros is a nimble humanoid with shaggy, unkempt brown hair and small curved horns protruding from his forehead. His eyes are solid purple. He wears a dark gray coat over his black leather armor, and a quiver at his back. He smiles easily and often, revealing sharp, pointed teeth, and he walks with a casual, sauntering grace. He is 28 years old.
People often react to Satyros' fiendish heritage with horror, fear, or violence, but short of actual attacks on his person, Satyros behaves in a friendly and amiable manner. He often talks to himself out loud, narrating his actions and addressing questions to himself. "What do you think, Satyros? I think it's time for Satyros to see how many Orcs he can kill with one arrow, Satyros."
Such a mechanism developed as a response to his seclusion in the Underdark, where he spent much of his early life. His mother, after giving birth to him, fled her community to escape persecution, and found an unlikely home in the caverns there. However, the hazards of the Underdark finally claimed her when Satyros was a child. He finally fled the Underdark after too many close calls. He has since had several mostly unsuccessful encounters with societies.
Satyros is unimpressed with what some call "civilization". As a result of his time spent in the wild, he sees most human behavior as just an extension of that. He sees predators and prey, something fundamentally amoral.
"I think everyone just does what they want and then invents a justification for it afterward, and then they call that morality or the commandments of God or something."
Satyros has an explorer's heart. He is driven by wanderlust - he wishes to see new lands, perhaps eventually settle down in a nice secluded spot. Perhaps deep down, his desire for seclusion is really a desire to find a place he won't be persecuted. Hard chance of getting him to admit that however.