Aeson is the disappointing younger brother, despite his older siblings' foibles and his own merits. He's a layered person, who wears so many masks to protect himself even he frequently doesn't know what's really him and what isn't.

Older phase is much more jaded and has much deeper masks, and doesn't let himself get close to anyone.
Younger phase is bitter and arrogant but usually does genuinely want to do the right thing - mainly because his core self is usually less covered.

The Righteous.
A Tian.

Half-sister to the somewhat more prevalent template Das, Amalia has a contentious relationship with her brother - when both exist - who frequently hates her for killing their shared mother.
Amalia tends to think men can be useful and women are uninteresting, as general categories. Amaury thinks men can be useful and women are basically most useful for sex.
Theoretically, Amalia comes in 'killed mom before she killed step-dad', but so far she has only actually come in 'killed mom after she killed step-dad'. The former case is fairly well adjusted, if more inclined to murder as a solution than most people, and is in both cases less sexist. The latter is obsessed with men who look and act like her step-dad/being like his father, to a truly unhealthy extent.

The Dutiful.

Calculated and usually cool-headed, a Caine puts on a front to keep others at a distance. Caines are avid readers and clever tacticians, and are typically considered child prodigies in their youths. Those who break through their shields can expect a loyal friend for life and beyond.
Caine is always homosexual and biromantic, and is always a man.

Sadistic and manipulative. Obsessed with beauty, and the beauty in suffering.

Das - Raised by serial black widow mom, wants him to be one as well, grows up to be more of a serial torturer than killer, he doesn't actually like killing. Trusts literally no one, ever, unless they are so completely in his power they can't escape.

Daemon - raised by abusive rich (and often noble) bio-dad, grows up to be a good-hearted artist who wants to make the world better and help people less fortunate. Disgusted by the rich/nobility. A huge romantic who gets himself into all sorts of messes with that. Sadistic tendencies kinda repressed, still finds suffering beautiful and is oriented around beauty - and innocence - in general.

Sweet boy. Weak-willed until he's Not. Doesn't want to hurt anyone but frequently ends up a soldier. Often possessed by or twin to Jalex, always at least connected in some way.
Has dyspraxia affecting primarily gross motor functions, which he controls by moving carefully and paying close attention to those movements.

Fiery, principled, and charismatic. Often frail, especially when they're young, but advanced medicine or magic can heal them.

Warm and resilient, Erins have a natural determination that often leads them to positions of great responsibility. That is, if they can live to adulthood, which is not a guarantee. Erins often have a strong bond with a large, usually reptillian animal companion.
Erins are always some degree of bisexual-leaning-homosexual-and-romantic, and are always women.

A Tian.
Quietly brilliant. Diligent and responsible. Everyone's big sibling. Often ends up ruling, despite usually not being the eldest. Would rather be a scholar or a knight, however. Don't shorten their name without permission.
Disaster gay. Tries so hard.

Balanced on the edge of the dark and light side, in Star Wars terms. A well-raised Idris believes in the inherent worth of all beings, and their right to life and freedom, and is willing to kill to ensure she and others have them.
Can be brought up to not believe everyone has equal rights to life and freedom, however. Will usually figure out this is wrong, eventually.

Terrifying Mom Friend.
Consent and permission are very important to them. The sort of person who minds their own business unless you make it their business to mind yours.
Always immortal. Usually non-human.
Genderfluid - usually some flavour of neutral but sometimes not.

Jamie/Alex

All the vices and only a few of the virtues of the Jamie and Alex templates.
Sadomasochist, Chaotic Evil. Jamie's (lack of) moral compass, Alex's temper. DNGAF. The most disaster child of all.
Likes hunting prey, fear, and inspiring emotions in others. Also enjoys possessing people.

Jalin - sub-template, used to be a Dino, more controlled and civilized than most Jalexes.

A Tian.

Chill and friendly, level-headed, loyal. Musician. Ladies man/woman. Sex ed friend.

Shy, smart, hardworking. What is that glint in her eye?

His sister's ever-loyal right hand. Delighted to be here.

Jalex/Ava or Jalex/Clary kid, maybe sometimes Dino/Ava.

Good at mental magic. Slippery. Good pilot. Betrayer.

A Tian, usually the youngest of their set.
Perceptive. Good at peopling. Not the best at balancing family and duty - often expects family to handle itself. Paperwork ninja.
Loves magic, particularly runes/seals/etc.

(Efficient, The Paperwork Ninja, loves developing magic, especially the kind that involves runes or other writing, speedy, often has teleportation and/or superspeed. Charismatic, friendly, prefers to fix a system from within rather than without, aims for the top because of that - also ambitious. Wants to rule, wants to help, wants to protect.
In combat, he is an extremely efficient killer, uses that teleportation and/or superspeed and reflexes to great effect.
A bit of a doofus around people he genuinely adores. Doting parent and partner, somewhat neglectful sibling.)

Conqueror. Usually ruler of something or other. Often runs a problematic military and has varyingly problematic personal habits. Pretty personable, though.
Family was descended from a ruling line before they became the current rulers.

In baseline form, a Robin is a cheerful goofball with a heart of gold, romantic and outwardly optimistic, if prone to cynicism in the privacy of their own thoughts. Unfortunately one of their template attractors is a highly traumatic situation which commonly occurs in their late teens. After this their personality often flips, leaving them melacholic and maliciously mischievous, and burying their optimism and kindness under a burning determination to right the wrongs done to them and their loved ones. They can escape this attractor and remain baseline, and they can also be retrieved by loved ones and left a mix of the two states.
Robins are always pansexual panromantics, and are also fanatically devoted to those they come to love. They typically identify as their assigned gender.

Usually Erin's companion. Usually a legged reptile of some kind. Often smarter than he seems.

Obsessed with architecture. Loves enchanting/runes/etc.

Valentine loved and feared and respected his father and believed in his values, until those values killed his father - or they loved and feared and respected a parent-figure until that parent-figure betrayed them and turned them against said parent-figure (and sometimes the parent-figure's people). They are usually born poor to a family with a grand history, and marry into a rich, more prestigious family. They usually engage in experiments to improve their children using magic and/or genetic engineering.

The Passionate.

Brandon does nothing by halves. No matter the emotion driving him, whether or not he's in the right, he puts his all into the course of action he chooses. He is a shooting star, burning bright, burning fast, and frequently, burning out.
Usually attached to Brae and Ashara templates.

Ashara/Brandon kids

Brae/Brandon kids

Sometimes the god of death; sometimes Jon's son; sometimes both. Melancholy, distant, hides kindness behind coldness.

Charming, friendly and calm until you push a little too far. Flashfire temper.
Alex/Clary kid.

Rigel kid. Chronic insomniac and narcoleptic, frequently suffers a crippling injury as a child. Often has a grand destiny and Hates It.

Pacifist, somewhat timid, loves plants.

Alex-Caine.

Ana's brother. Tracker, hunter, devoted to family. Sometimes one of Jack's possessees.

Often attached to Rhae and/or Robert template. Association with wolves, blue roses, and horses. Sometimes Robin's mother. Sometimes Jamie's mother. Sometimes Jamie's siblings mother. Usually Brandon's sister.

Erinmom. SCIENCE.

Aggressively, polyamorously pansexual. Very family focused. Will destroy everything you hold dear if you cross his loved ones. Doesn't believe in holding the child responsible for their parents' faults, however.

Doomed Romance template. Born to rule. Believes in prophecy, and usually has one about them.