She's the only one I married but not sure what you mean by unlock. I reached 10 hearts with others and I've not had anything unique unlock with them either. They all different heart events but haven't given me anything unique that I already didn't have or couldn't make myself. Maybe I misunderstand the question?
To me, she's a scientist, probably STEM, works part time at a doctor's office and is super intelligent which is why she appeals to me. In roleplaying terms, conversation with her would not be dull or limited. If she unlocks something else, I haven't discovered it yet.

Geralt, Eskel and Lambert, Ciri also Regis. There are just so many awesome characters in the witcher universe I don't know how to pick just one.

Hmm this is actually a really good question. There are quite a few but my top picks (in no particular order) would be...

- Guthix (RuneScape)
- Lorkhan and all who mantled him, Ayrenn, Pelinal Whitestrake, Sotha Sil (The Elder Scrolls)
- Geralt, Ciri and Triss (The Witcher)
- Robert House (Fallout)
- Adam Jensen (Deus Ex)
- Eothas, Eder and Xoti (Pillars of Eternity)
- Atrus (Myst)
- Arthur Morgan (Red Dead Redemption)
- Lord British (Ultima)
- Ezio Auditore, Connor and Haytham Kenway, Shay Cormac, Bayek (Assassin's Creed)
- Aiden Pearce (Watch Dogs)
- Sam Fisher (Splinter Cell)

As I said, there are a lot, definitely too many to list, but those are some of the ones I REALLY want to meet.

I would love to have a glass of rum with my advisor from Tropico 4.

I hear Sam from SDV is easy to woo and fun...

But my first thought was Morte.

definitely sonic as a friend. i'd like to have him carry me every place i go so i wont be stuck in traffic :P
(if he can carry me)

Aloy.

She seems like she'd be cool to hang with.

Is it weird that I can't think of anyone, not even from my favorite games? Why would I hang out with dorky pirates, vampires, gang bosses, athletic tomb raiders, muscle men, killers and mercenaries, dead people, or even little kids and angsty teenagers, and why would they hang out with me?

Well, I guess, Kate Walker is a down-to-earth person that you could talk to, maybe? Not my favorite videogame character - you don't even learn that much about her, but maybe that would make it more interesting to get to know her. At least I wouldn't have to worry that she pulls a gun on me or bites my neck. Then again, these adventure game characters always have ulterior motives when talking to you - she'd probably only be after a favour or distracting me to get a specific item in my possession. XD

Lionel Starkweather / The Director from Manhunt seems to be an interesting person to talk to. Apart from that, maybe Kain from Blood Omen, Vega and Juri from Street Fighter and Mei Ling from Metal Gear Solid would be interesting people to meet.

Boo would be nice :D

Not that I'd want to hang out with him on a regular basis, but I think meeting Minsc from Baldur's Gate would be quite the memorable experience. I have no idea what would happen, but I'm sure the selfie I would post later that night would be tagged with "...and hilarity ensued."

Well to be honest, i never met a character i would like to meet in real life, like you are playing just a game you know, and most of the time i play my own character, of course there are certain girl types that appeal to you more then others but to want to have sex from a male genetic standpoint is just as common as breathing air.

Zoltan Chivay - honest and loyal to a fault, and good for philosophical talks, drinking fun and cracking some skulls.

Aerie from BG2.
Minsc and Boo from BG2.

Morrigan from Dragon Age: Origins.
Merrill from Dragon Age 2.

Tifa Lockhart from FF7.

Lara Croft from Tomb Raider series.

Fall-From-Grace from Planescape: Torment.
Morte from PST.

Shani and Triss from The Witcher series.
Geralt from Witcher series.

Ezio from AC series.

I'm sure there's more, but...that's for starters.

Princess Peach :'(