1. The color of their eyes.
He's a couple years younger than Cae'Sera, hovering around 29 somewhere?
3. One strange thing/quirk/defining characteristic of their body or physical appearance.
I'm tempted to just write "infuriatingly handsome" but I suppose I'll elaborate: Idare goes through life with a warm, friendly, low chuckle and a knowing trollish grin. He's lean and muscular with a charmingly bent nose and thick eyebrows that are usually waggling at you about some stupid wonky pun he just made. He is an ass.
4. One strange thing/quirk/defining characteristic of their personality
Puns and relentless innuendos hiding secret kinslaying angst. Here, how's this: he will flirt with literally anyone. I have jokingly referred to him as omnisexual.
5. How their parents met.
Being Sith Commanders and murdering people I guess. Or maybe at a Sith party (while murdering people). Basically there was murder before matrimony.
6. Who their first love was, and why they loved them
Teenage hunk Idare started banging teen hoebag Quirin Corvus because Rin was known as a SUPER LOYAL IMPERIAL and Idare hoped this association would make him seem like less of a lightside traitor who just sent his weak-in-the-force younger brother to the Jedi. This backfired majorly when Idare and Rin fell into dorky young love. Idare had to leave Rin when he was apprenticed to a high ranking darth and taken away from Korriban; he had no outside contact without his master's approval for two years, effectively ending his romance with Quirin.
7. How/why I came up with the concept for them
I had no idea how I was going to manage playing a sith and then they gave me so many stupid lightside joke options.
8. Who they eventually end up with
Cae'Sera Lalelius, who is everything he dreamed of and never believed possible, really. She's beauty and grace and kindness and humor and he adores her, pure and simple. They defect together, marry, have three red children, make stupid puns, and he becomes Mr. Mom while she's the foremost Xenozoologist at the Corellian Zoo.
9. Their favorite animal.
He meets a LOT of fantastic animals because of his wife, but his favorite is his riding varactyl, Parsnip.