Are they a part of any factions, guilds, or organizations?
How do they feel about consorting with daedra? Do they collect their artifacts? Are there some they would never interact with vs. some they would consider calling upon?
Which areas of Skyrim do they find most beautiful and most dangerous?
I'm just gonna answer each for both Freymir and Tallen :) They're both Dragonborn OCs who don't exist alongside each other, and both OCs come with their own changes to the game's lore.
Factions/Guilds/Organizations?
Freymir: Most notably she is part of the Companions, and the Circle. She also fought in the Civil War alongside the Imperial army.
Other than that she does not really consider herself part of any other factions. Tho she does eventually get roped into their business.
Part of her story is that she is immortal, and thus cursed to walk Skyrim's lands forever. And eternity does get quite boring!
So while she is involved with the Dark Brotherhood, Thieves Guild and Mage's College as well she doesn't really align herself with their general ideologies and identity.
Tallen: He's an S/I so he's just kinda forced to do everything I find interesting >v<
He's a soldier in the imperial army (I PROMISE I have OCs who aren't in the imperial army...), he's reluctant member (and listener) of the Dark Brotherhood, he is part of the Thieves Guild but largely more casual until Mercer Frey got him involved in stuff that got... pretty major, he's also part of the Dawnguard!
Idk how far this counts as a faction but after Ulfric Stormcloak was defeated he was temporarily placed as Jarl of Windhelm until he stepped down but stayed as consultant to Brunwulf Free-Winter.
Daedra?
Freymir: Much like the whole factions thing, Daedric relations are much less something Freymir does but much more something that happens to her. She is mostly very reluctant to align herself with Daedric Princes because she is a very kind-hearted and peaceful person, and considers most Daedra to be malicious.
Through her curiosity (about the artifacts) and naivety she has come in contact with nearly all Daedra against her will, some of them forcing her to do their willing to a breaking point. She regrets her actions deeply, and is frequently overcome by immeasurable guilt.
She wouldn't outright admit it but she is somewhat afraid of Hermaeus Mora, not just because of his power and infamy, but his appearance and the apocrypha freak her out as well.
She is usually quite ambivalent towards Daedra worship, but she steers clear of those that consort with Hircine, Molag Bal, Hermaeus Mora or Namira.
Tallen: He has pretty complex relationship to the Princes. Tallen is a worshipper of Meridia's and consorts with her frequently, he is also in occasional contact with Sanguine and one of the Prince's elected favorites.
His bond to Hircine is quite specific, he carries the title "Son of Hircine" for himself. He tells a story of a lost child in a forest with an unusually strong and animalistic bloodlust, who was encountered by Hircine who granted him the gift (or curse) of lycanthropy, and eventually took it upon himself to raise his own champion. Their bond is somewhat patchy as Tallen holds an anger towards the countless murders Hircine encouraged him to, but in the end he was the closest to a father Tallen ever had.
He has once worked with Namira, but after he was forced to cannibalize a friend of his he tried to keep his distance.
He's very wary of the stronger and less benevolent Daedra. He's very interested in the artifacts and spends a lot of his time pondering whether or not they're worth it. He does proudly carry Meridia's Dawnbreaker tho. He also got his hands on Namira's ring and Sanguine's rose.
Tallen is generally skeptical of Daedra worship as he's sure few worshippers realize the potential and willingness the Princes hold to take advantage of their followers, as long as one is perceptive to the risks he sees no issue in it.
Most Beautiful/Most Dangerous Areas
Freymir: She prefers to stay on Solstheim, which she considers both beautiful and dangerous. But the most overwhelming sense of beauty, and alongside it danger, she has experienced in Sovngarde during her final battle with Alduin. She is at peace knowing friend she lost might spend eternity in such place.
Tallen: He could never pick a place he considers most beautiful, for he sees (almost) all of Skyrim as being of incomparable beauty. In very broad senses he does consider its nature the most beautiful place. Most dangerous he thinks by far are the dwarven ruins, and alongside it Blackreach.
Thank you anon :3