@Guardian Angel Haruki
What would an insight check of 20 tell me about this half-orc?

Also, is he currently hostile to us or is he just indifferent?

@Guardian Angel Haruki
Would a 20 also be high enough to sus out any of the half-orcs characteristics? His personality traits, ideals, bonds, flaws? Anything that could be touched on to make the guy more agreeable if not outright friendly to us?

I would say with a 20, you can pick 2 out of those four. Which ones do you want to know?

<Snipped quote by Guardian Angel Haruki>

I'll go with personality traits and flaws.

@Guardian Angel Haruki
Would appealing to the half-orc's pride allow for a persuasion check to make him friendly to be made with advantage?

Here's another bit of lore I've come up with.

Fallen Angels [+]

When mortals think of fallen angels, they tend to think of those that have turned their back on all that is good and became something more akin to a fiend than a celestial. However, those kinds of fallen angel aren't the only kind out there. When an angel is first created, they are instilled with a deep-seated devotion to law and goodness. And it is any deviation from this initial alignment, no matter how slight, that marks an angel as fallen. With there being nine possible alignments other than lawful good, fallen angels can be sorted into eight different categories.

The Shackled: Fallen angels of neutral good. Taking their name from the heavy chains they wear out of guilt over their unlawful actions, the Shackled no longer commit themselves fully to the cause of law. Though they remain loyal to the forces of good. Being one of the two fallen angels to have deviated the least from their original alignment, they are prone to old habits and will often continue to fight for law even though they no longer believe in it so fervently. But when a choice between what is lawful and what is good must be made, the Shackled will always choose that which is good.

The Unbound: Fallen angels of chaotic good. Seeing the vileness that is perpetrated and perpetuated by the law can drive even its most ardent supporters to abandon it. The Unbound are living proof of this. Eternal rebels and immortal revolutionaries, the Unbound travel wherever the forces of law and evil are strongest, often leaving a trail of toppled tyrants and deposed dictators in their wake.

The Blind: Fallen angels of lawful neutrality. The Blind take their name from the blindfolds they wear to represent their blind commitment to law. Being one of the two fallen angels to have deviated the least from their original alignment, they are prone to old habits and will often continue to fight for good even though they no longer believe in it so fervently. But when a choice between what is lawful and what is good must be made, the Blind will always choose that which is lawful.

The Grey: Fallen angels of true neutrality. Named for the grey hue their skin takes on after their fall, the Grey are as difficult to define beyond that point as the alignment they take on is. Some work to maintain a cosmic balance, serving one alignment one day and another the next to achieve that end. Others fall into a state of complete apathy, refusing to take a side in any matter regardless of its significance. Others still abandon traditional morality altogether, taking on a new and completely alien mindset.

The Wild: Fallen angels of chaotic neutrality. The Wild are utterly unpredictable. Their allegiances, their motivations, and almost every other aspect about them can and will change on a whim. Having not strayed too far from the path of good though, their antics are rarely malevolent in nature. More often than not, the worst they will do is bring down a wide variety of inconvenient mischief on someone who has caught their interest or drawn their ire. The Wild will also often find their way into the Feywild, where they may pledge their services to an archfey for however long their interest in doing so remains.

The Tyrannical: Fallen angels of lawful evil. These are the fallen angels most well known to mortal kind, due to the former archdevil Zariel being a fallen angel of this category prior to her redemption during the Descent. Contrary to popular belief, not all of the Tyrannical are servants of the Nine Hells. Many instead pledge themselves to lawful evil gods such as Laduguer, Maglubiyet, and Sargonnas.

The Villainous: Fallen angels of neutral evil. They care for nothing save their own personal gain. Some travel to the material plane to become crime lords, conquerors, and cult leaders. Others descend upon the lower planes to serve as mercenaries in the cosmic conflicts that rage their. However, most simply vanish. Where they have gone and what - if anything - they are up to unknown even to the most omniscient diviners in the multiverse.

The Vilest: Fallen angels of chaotic evil. They are everything an ordinary angel is not, with those few who fall this far barely being recognizable as celestials. The Vilest are absolutely despised by ordinary angels, who relentlessly pursue any that fall to these darkest depths and will stop at nothing to see them slain.

The Bestial: Fallen angels who have lost enough of their intelligence to become unaligned. Stripped of their intellect, the Bestial become little more than the beasts from which they take their name. Acting purely on instinct, these fallen angels wander without purpose and without aim. With the restoration of their intelligence usually being all that is required to bring them back to their original lawful good alignment, almost every story regarding the Bestial revolves around adventurers questing to find the angel and fix their broken mind.