Brass dragon

Every race with multiple variants comes with a "chaotic good trickster" archetype, and for the dragons, its the brass.

Gentle Genevieve is an an ancient brass dragon known for her skill at gardening. Such were here skill and indeed age, that the tree between worlds, Yggdrassil, was actually one of the very first plants she sowed. As she had multiple majestic plants, gardens, saplings and forests to tend to across the world, many of her favourites had guardians. For Ygdrassil, indeed, she had formed an entire order of knights, sworn to protect it. Alas, when the giants from beyond the stars invaded, Yggrdassil was felled. Genevieve grew violent and bitter, and went on a mad, bloodthirsty hunt to eradicate the Order of The Tree along with their entire bloodlines.

Whimsical Watcher of the Worlds is the title an outgoing, cosmopolitan young brass dragon claims. He trades in secrets with those he deems worthy, gathering info about any potential clients, before inviting them for a try at one of the many games he has collected over the years. In the last century, he most often faced opponents in three-dimensional chess, or tarot bridge. However, his latest fascination is a new game created by a mad minotaur wizard called J'ason. In the game, players create fake personas, and re-enact adventures from the epics, throwing weird, crystalline dice to determine whether they fail or triumph.

An oppressive order of knights known as the Brvtalmarines have conquered what were once halfling lands. As a cruel joke, the knights offer trial by combat as an option instead of judge and jury deciding the fate of the local populace. When the leader of a localized uprising is arrested, it is no surprise that he chooses to try and fight his way to freedom - what is a surprise, though, is him revealing his form as a mighty brass dragon. Opposing him, as a champion of the marines, is an ill-fated double agent who was only there to sabotage the trial in the first place, but convincing the dragon of that will be no easy task.

Black dragon

Like all dragons, the black comes to us in three size/age categories: young, adult, and ancient. Quick note, before i dive into the encounters - any crhomatic dragon can become a prepared spellcaster, by merely swapping out some of their physical abilities for an array of spells, which is highly versatile, giving you room to customize a dragon encounter even further.

Unlike most of his kin, Gargathas the black dragon isn't one to follow tradition. Whereas other black dragons claim swamps, marshes and rotten tundras as their homes, Gargathas makes his lair deep within the ancient and labyrinthine sewer system of the city of Kepesh. Since arriving there, he has enslaved five tribes of goblins, along with a rabid pack of goblin dogs, several enclaves of Ootyughs (who don't exactly serve him willingly), an order of mad monks who live in the sewers to punish themselves, and an entire department of college alchemists who happened to be doing research of the foul waters.
As nearly a quarter of the city's population (usually the escaped slaves, and the outright second class citizens) eventually make their way into the massive, unexplored sewers, the dragon is becoming essentially an authority parallel to that of the city's nobles, and dragonslayers are called forth.

Although black dragons don't particularly like any other races, they aren't above using them as a means to an end. An adventurous young black dragon named Nimandrith used to claim a patch of atolls known as Deadreef as his own, but due to their proximity to a volcanic archipelago, a red dragon has forced him out.
Nowdays, Nimandrith goes by the moniker Dread Captain Druzil, leading a small flotilla of pirate ships. The recent surge in recruitment is due to him finally deciding he stands a chance against his rival, but new pirates may not be let in on the secret until it's too late.

Glabadraxia, the ancient black wyrm used to rule empires and cults in times long since forgotten. Over the ages, her temperament has very much softened, and for the past milenium, she has been looking for someone worthy of inheriting the vast (mostly alchemical in nature) treasure she has collected over the years. Due to her newfound (she has been doing it for only a bit over a thousand years) hobby being brewing hot sauces, "worthy heir" means "someone able to swallow a spoonful of her super secret sauce without flinching". While her intentions are indeed well-meaning, as she'd hate for her vast legacy to rot, she cares not much for the occasional death she causes, as she only sees such occurrences as weeding out the weak.

Astradaemon

Before i get to this entry, there's something I'd just like to address quickly, and that I maybe should have mentioned back when i covered the arbiter:  this blog and it's relation to the pathfinder2 cosmology. While obviously i can't namedrop Lost Omens planes by name (at least some of them? I'd hazard a guess that names like Nirvana and Abbaddon are probably public domain) i decided to take this blog a step further, and just... Ignore d&d-like cosmology (at least nine planes, each responding to one alignment, +the material plane, +probably some dream and primal/fey planes...) as a whole, sometimes referring to it, sometimes using something a bit but not not exactly like it, and sometimes explicitly having a single plane setting. All as the story demands. I'm sure if you happen to use any of these encounters, you'll be able to find a way to fit them in your story regardless.

Trillbog of Ten Thousand Teeth is an oddity among astradaemons - one who makes his home in the Prime Material Plane. There, he usurped a cult of a minor monstrous deity, convincing the scared cultists he was it's avatar. If any of the many daemonhunters of the region do encounter him outside his dark lair, he is bound to be followed by a dozen cultists. While the cultists make for poor combatants, they are more than willing to die in the service of their god, willingly sacrificing themselves so that Trillbog drains their essence, negating any wound he may have been dealt.

The chthonic gods are not allowed to directly extend their influence outside of Hades. Unfortunately, the river Styx and its lonely ferryman Charon technically fall under the Olympians' jurisdiction. When a weird, serpentine monstrosity appears on the shores of Styx, and starts devouring the souls of the recently departed as they try to make their way to the afterlife, Lord Hades himself has no choice but to release several long dead heroes to deal with it, having no choice but to trust their oaths that they will not go back to the lands of the living after slaying the beast and discerning whence it came from.

Yoglun Borak is a warrior from an ancient time, the Last Hyberian. He has stood guard at the Veiled Gate for millennia, guarding the world from the entities that lurk beyond. When he helps two young knights pass beyond to save their friend's soul, they make an oath to answer when he calls them. Several years later, he does. They are to guard the gate for a hundred and one days, while he goes beyond, on whatever business a demigod like him may have.
They honorably accept, and the first hundred days pass fairly uneventfully - the occasional imp or poltergeist try to break through, but those are easily pushed back. On the last day, though, a Night Hag appears, threatening to pull forward an Astradaemon unless she is given a human soul of pure heart. While the female knight is willing to test her resolve against such an adversary, the young male fears they would not best it, and considers offering his soul to the hag.