Name: Marida
Titles(s): Queen under the Mountain, Queen of Erebor
Current Location: Erebor
Appearance:
Erebor;
Isla NublarHeight: about 5'6, a bit taller than her estranged husband, Thorin Oakenshield, but smaller than her "husband" of an alternate timeline (which no longer exists, so this "marriage" is no longer valid), Owen Grady (who's about 6'2)
Nationality: Marida's the result of a union between a woman of Dale and a dwarf of the Blue Mountains. She is the only female of three offspring and is the second oldest.
Personality: Marida's as curious as a cat, which often gets her into trouble, mostly by creatures or animals that have the potential to end her life. She has escaped death twice so far; the first was during Smaug's attack on Erebor when a wrong turn nearly got her crushed by one of the dragon's massive limbs if her estranged husband, Thorin Oakenshield, wouldn't have pulled her to safety at the last possibe second, and the second shortly after she discovered the time portal and got a little too close and fell into the Raptor Pen in Jurassic World on the tropical island of Isla Nublar.
Family:
Owen Grady, husband of an alternate timeline created when Marida passed through a time portal she discovered in an abandoned section of Erebor during a "falling out" with Thorin. This timeline was erased when the portal in Middle-earth began to break down (due to the one on Isla Nublar being destroyed by the volcanic eruption of Mt. Sibo), opening up a rift that sent Marida back to Middle-earth during the attack on Erebor by Smaug, giving her a chance to mend her relationship with Thorin, even if she has to relive it all over again (though she has no memory of the earlier timeline, so it's like it's happening for the first time)
Thorin Oakenshield, estranged and current husband that she's trying to mend her relationship with
Michaela, mother (deceased), originally from Dale that may have been a relative of the woman who called Alfrid a snake.
Kali, jealous cousin that always seems to want what she can't have.
I'll add Marida's father and two brothers (one younger, one older) once I come up with names for them. They're of Dwarven descent originally from the Blue Mountains.
Age: Unknown, but looks to be in her mid-thirties (by human standards)
History: Marida's father first took her to Erebor about five years before Smaug's attack to get her mind off what happened to her mother, Michaela, who died in a mining accident. This is where she met her estranged husband, one Thorin Oakenshield, whom she pursued for years. The two were finally wed just prior to the quest to reclaim the mountain kingdom from the dragon. Everything seemed to be fine until about three years into the marriage, which, like the mountain that killed her mother, seemed to be on the brink of collapse. There may have been a few things that led up to this; Thorin's stubbornness towards Elves (especially Thranduil), whom Marida never had a problem with, and Marida's loss of freedom (which may have been the main culprit, since she couldn't even go to nearby Dale, where her mother came from, without a chaperone, so she may have felt more like a prisoner than a queen). That last argument between the two seemed to break the former queen. To the point where she seeked to get as far away from Thorin as she could, which she did, when she came across a time portal in an abandoned section of Erebor (which was never cleaned up from Smaug's attack, due to the fact that it may have been mostly used for storage, so not many dwarves ventured this far into the kingdom) that led her to Jurassic World on the tropical island of Isla Nublar, where she met Raptor trainer, Owen Grady.
Return to Middle-earth: After nearly a decade on Isla Nublar on Earth, Marida is now back in her world. There was a similar time portal on Isla Nublar, but it got destroyed by the volcanic eruption of Mt. Sibo, causing the one in Middle-earth to break down until it opened up a time rift searching for the world Marida ended up in. When it found her (in an underground bunker, since the surface of the island was still recovering from the eruption) it worked in the same way the portal did; pulling her back in when she got close enough to the white light, but she emerged during an earlier time than the time she left; during Smaug's attack on Erebor, which is when she and Thorin first got together. Though she has to relive their entire relationship, can she somehow prevent the "falling out" that occured a few years later? Only time will tell, but even if events play out the same way they did originally, there will be no time portal in the abandoned section of Erebor to escape her troubles, so it looks like she might have to.
I like how you have an actual character for your forum persona. 
