Some questions off the top of my head:

What is Sock most afraid of? Most interested in? Most peeved by?
How would Sock handle a dangerous situation?
How would Sock handle strong feelings of any kind? (i.e. Stress, Sadness, Happiness... Maybe Love...? ;3)
What are Sock's main talents?
How does Sock normally introduce himself to people? How does he react around various types of people?
What is Sock's favorite food? Favorite drink?
What does Sock get squeamish about when seeing/hearing about/doing it?
What is Sock's favorite pastime?

I'll post more when I can think of them.

Ooo, these are some great questions!

1. It's more a psychological fear than anything. the thought of being the last person in the world, or being put on a deserted island or being in solitary confinement absolutely terrifies him. As for most interested... As cliche as it might be, absolutely most interested in people. He's extremely curious about other people, what makes them tick, who they are, that sort of thing. He realizes that most people put up barriers or hide behind false personalities while in public, and he's interested in what's behind that. He's also really big on respect, if anything, seeing everyone being treated fairly. which leads into most peeved, and that's seeing someone being treated unfairly or being taken advantage of.

2. This is a fun and difficult question! Especially because it can involve a number of different things. If it wasn't an immediate danger (I.E. poison gas in a trapped room) He'd make a conscious effort to never show that he's anything but optimistic. He doesn't get shocked or surprised easily, which definitely helps. If it's a more immediate danger (I.E. Someone's about to die, hanging on the edge of a cliff, being held at gunpoint, I'd imagine he'd try whatever he could to keep that person from being in harms way, even if it means it being him instead of them that's in danger. (This all seems really cliche, but that's how it is!)

3. D: You did that on purpose! Lol. But this sort of ties in with the last question. He will NEVER let anyone see him with any distressing emotions like depression, sadness, stress, anger, etc. If he absolutely cannot control his outward emotions, he will either leave as subtly as he can until he feels better, or he'll just avoid being in public until he does. positive emotions, on the other hand like happiness, excitement, mischeviousness... If anything he accentuates those feelings.

4. Hmm... He has a natural affinity for music, and he considers being able to make people happy a talent. Apart from that, he also has a great knack for just -knowing- how to put things together, how to build/assemble/repair/tinker things.

5. Sock has NO personal boundaries. In his eyes, there are no acquaintances or strangers. For better or worse, in his mind, if he acts like their friend and calls them his friend then they're more likely to open up to him, break down those natural defensive barriers we're prone to put up. For that reason he'll introduce himself strongly and in an animated fashion right off the bat, totally disregard most "aquaintance" formalities and skip right to acting like best friends, regardless of the type of person they happen to be.

6. His favorite food without a doubt would have to be Ramen. Cooked any way, with any types of seasoning, he goes crazy for them noodles! His favorite drink is absolutely milk.

7. Sock loves trying new things, this doesn't mean that he likes everything he tries, though. He also has some pre-concieved notions about what he would or wouldn't like, such as:
Kissing. This is totally "eww" for sock. Dem cooties.
He doesn't like hearing about gorey/scary subjects, and gets really squeamish around needles and anything to do with the anatomy of the wrist, for some reason.

8. A favorite pasttime hm? Well he loves playing in the snow, though he doesn't have much opportunity to do so. He loves fiddling with his legos and LOVES to go exploring, especially in old, abandoned buildings and complexes.

Taa daa! That's it so far ^_^

Whats socks favorite color? =3
Which season does Sock like the most?

His favorite color would have to be along the same lines as his favorite season. He loves the color the trees turn in the fall, because they complement and bring out the color in his fur VERY well. There's also a chance for snow in the fall, and he loves playing in it, especially when it's freshly fallen, not when it's all hard packed, icy and gross near the end of winter >.<

I'll think of some good ones (clean ones) and drop by a bit later. I'm going to sleep now. Zzzz....

What does Sock like to do on a daily basis?
Where does Sock normally reside?
Does Sock have any family (like is he related to Momimi somehow)?

Thats all I can think of right now. x3

1. He normally makes a conscious effort to be out doing -something-. A day wasted to him is a day spent in his room. Normally this amounts to him building makeshift tree forts with his friends, playing with his plastic army men and making battlegrounds for them, working, or volunteering at assorted organizations. (He loves the humane society! =P)

2. This is a difficult question, I love it! He has his own place, a small little apartment, one room +kitchen/bath. He has a hammock instead of a bed that he sleeps in, and can often get lost in the large pile of blankets heaped on it. Momo also lives there, and if she doesn't pass out on Socks head normally sleeps on the old-fashioned radiator.

3. He and Momo aren't related, that's a whole other story that I suppose I should make, but it might be too long for just a simple reply xD He was raised by an older couple, he's still not 100% sure if they were his parents or not, mostly because there weren't the same color as him (And they may have been a different species...) But he considers them family without a doubt, and still visits them often!

What is Sock's family like?

How has he lived financially? (like lower class, middle class, upper class) For example, Lukewilk has lived in Lower Middle Class for most of his life, which was never very luscious or pampering, but taught him to be happy with what he had, and to avoid being selfish in terms of money.

What type of person is he in an emergency or survival situation? Can he think on his feet? Would he quickly become a leader? Or would he panic and collapse under the pressure? Or just keep out of the way and do what he's told? I read that you said he's squeamish around gore and needles,; what if he was faced with saving a person's life by dealing with such problem's stated earlier?

Oh gosh, these are all very intense and serious questions, and I LOVE them! They're not at all what you would expect from a character like Sock, so I wouldn't normally think of scenarios like this. Keep it up guys!