Yes I know this was for OCs. No I don't care.

( This was actually quite insightful )

• How easy is it to earn their trust?

Fairly. He's still a pretty trusting kiddo at his core.
 

• How easy is it to earn their mistrust?

Did you do something bad? Did he see? Did someone else he trusts see? Then that's that.... until he ends up deciding that maybe he should give you a second chance. Seriously naïve hero here.
 

• Do they consider laws flexible, or immovable?

Are they just laws? If Luke disagrees with the laws for moral reasons or the like then he's absolutely going to ignore them. His moral compass and what he believes to be right >>>>>>>>>> the law.
 

• What triggers nostalgia for them, most often? Do they enjoy that feeling?

Sand. No, no not really. He's been trying to forget all about the first... 19 years of his life more or less. It's not working very well.
 

• What were they told to stop/start doing most often as a child

Oh my sweet maker that's a long list. Don't run around so much Luke. Don't ask so many questions Luke. Stop disappearing to go play Luke you've got chores. Stop disappearing at all we worry when we don't know where you are. Stop trying to fight oppression you're a child. I could go on.
 

• Do they swear? Do they remember their first swear word?

Absolutely. Probably in Huttese most often First swear word they ever heard was from Uncle Owen. Aunt Beru was not happy about it.
 

• What lie do they most frequently remember telling? Does it haunt them?

Luke is one of the worst liars you will ever meet. He's seriously so bad at it. Probably whatever the last lie he told his Aunt and Uncle. Since they're... dead now and all that.  When's the last time he told Owen he hates him? Because that's probably a big one. He loved Owen and Beru dearly and regrets that he didn't express that as well as he should have.
 

• How do they cope with confusion (seek clarification, pretend they understand, etc)?

Ask 30 million questions about it? There are times he'd pretend to understand. If he was trying to be smooth or whatever, but in general? He wants to know. Always hungry for knowledge, even if he might get bored if you give him too much at once.
 

• How do they deal with an itch found in a place they can’t quite reach?

Is there a friend nearby he can whine at and see if they'll itch it for him? Because absolutely is he the sort of guy to puppy eyes until someone itches it for him. otherwise probably tries to use objects nearby to deal with it himself.
 

• What color do they think they look best in? Do they actually look best in that color?

Not really something he's thought about all that much? No wonder Eight hates his fashion sense. He doesn't have one. lol
 

• What animal do they fear most?

How many big scary monsters did Owen try and use against Little Luke to get him to stay inside once it was Dark outside? Good question. Rancors and Sarlacc probably, among other things. The idea of the big, scary monsters Jabba had being his childhood fears appeals to me.
 

• How do they speak? Is what they say usually thought of on the spot, or do they rehearse it in their mind first?

There is very little brain to mouth filter in affect right now. He'll grow to be more thoughtful later, but usually he's just a stream of consciousness kind of guy.
 

• What makes their stomach turn?

Is he sick? Other than that, embarrassment, tense situations you can't get out of where things are really awkward, thinking about Ben's overall fate despite him being here and now and healthy?, honestly it's a pretty long list at this point.
 

• Are they easily embarrassed?

Somewhat easy, yeah. Awkward smiles, maybe a bit shy and uncertain. Flusters super easily. Fairly sheltered farm boy honestly.
 

• What embarrasses them?

He's nineteen. A lot of things. Flirting? Absolutely. Being seen as 'just a kid'? Oh for sure. But seriously it's a very long list.
 

• What is their favorite number?

He doesn't have one.
 

• If they were asked to explain the difference between romantic and platonic or familial love, how would they do so?

... can he just direct them to ask Ben instead? Or Padme. Or Juhani. Or.. honestly, who's asking? Because that'd affect who he'd deflect the question to at the time. He has no experience with romantic love yet. And so his answer would be... eventually admitting he's not quite sure himself yet.
 

• Why do they get up in the morning?

Because it's not like he can just spend all day in bed.... can he? Of course not, he's got far too much energy for that.

• How does jealousy manifest itself in them (they become possessive, they become aloof, etc)?

Oho. Not something he's had much experience with yet. But I do think he's on the clingy and possessive side. At least until he realized and then I think it's something he'd actively address because... behaving like that's not okay.
 

• How does envy manifest itself in them (they take what they want, they become resentful, etc)?

I don't see him as the envious sort. Like he was upset when Biggs got to leave and he didn't, but it's not like he ever grew resentful or anything. He just waited for it to finally be his turn. He's not really the sort to envy someone their good fortune. He'd rather celebrate with them instead.
 

• Is sex something that they’re comfortable speaking about? To whom?

Absolutely not. Not something he's comfortable talking about. And how he'd respond would depend on who brought it up. But it's... yeah that's a good way to fluster Young Skywalker. Who is absolutely still a virgin.
 

• What are their thoughts on marriage?

It's a thing that exists. He hasn't really given it much thought yet. It's... nice he guesses?
 

• What is their preferred mode of transportation?

Insert Luke making flying noises here. Because it's canon.
 

• What causes them to feel dread?

... That's a long list.  Also right now? He's being super careful to keep Ben's death at Vader's hand a secret from pretty much everyone. So I guess that slipping out is up there.

• Would they prefer a lie over an unpleasant truth?

He'd rather be told the truth. Even thought it hurts. But finding out Vader was his father? Preferable to 'Vader killed your dad'. No 'A certain point of view' please just be up front with him.
 

• Do they usually live up to their own ideals?

....sometimes?
 

• Who do they most regret meeting?

Honestly? No one. Not the droids even though they lead to the death of his aunt and uncle. Nothing. Regret isn't really a thing he's allowed himself to feel about any of it. Not yet.
 

• Who are they the most glad to have met?

Leia. But also Ben. And now... Padme and Rey and... pretty much everyone honestly. Maybe not Kylo, but give them time. Could still happen.
 

• Do they have a go-to story in conversation? Or a joke?

Nope.
 

• Could they be considered lazy?

Yes, probably. But it's incorrect. He's not lazy in the slightest, his priorities are just different. 
 

• How hard is it for them to shake a sense of guilt?

Very. It's probably one of his harder darker emotions to deal with.
 

• How do they treat the things their friends come to them excited about? Are they supportive?

Luke is absolutely a supportive friend. Even if he doesn't Get It. It doesn't matter. If they're excited about it then he's excited for them.
 

• Do they actively seek romance, or do they wait for it to fall into their lap?

...He's not seeking it right now. if it happened to fall into his lap? He'd be very confused, but go with it.
 

• Do they have a system for remembering names, long lists of numbers, things that need to go in a certain order (like anagrams, putting things to melodies, etc)?

He just... does. He either remember it or he doesn't. There's no tricks no.. nothing like that. It's either important enough to him that he remembers it or he doesn't.
 

• What memory do they revisit the most often?

Luke's been replaying the brief time he'd spent with Ben before getting pulled into the game a lot. Maybe it hadn't been very long, but it meant the world to Luke. Coincidentally, he sees Ben's death constantly in his nightmares. It's maybe not an every night thing but it is very, very frequent. 
 

• How easy is it for them to ignore flaws in other people?

Absolutely. He's an idealist at heart and tends to have this... perfect image that he builds of people in his head that usually has to get squished so he can actually see that they're human just like he is.
 

• How sensitive are they to their own flaws?

If you asked him, he could probably give you a list of his flaws. Then he'd shrug and laugh it off like it's not a big deal.
 

• How do they feel about children?

They're really cute and when they're older fun to play with? They're.. alright? He adores his sister. Who is currently 10 and he's absolutely wrapped around her lil finger.
 

• How badly do they want to reach their end goal?

He's not even sure what that goal is yet.
 

• If someone asked them to explain their sexuality, how would they do so?

He'd be confused by the question at first. But once explained what they're asking he'd get it pretty quickly. In Practice Anyone. In reality... he's been single for 19 years and that doesn't look likely to change any time soon. Pan across the board, his sexuality and romantic attraction aligns.