There's no way around it: Inhumans is the low point of the Marvel Cinematic Universe. The one-season ABC show, which was originally intended to be a movie, followed the Inhuman royal family who lived in a colony called Attilan on the moon. The Inhumans on the moon had no relationship to the ones already introduced on Earth in Agents of S.H.I.E.L.D. The royal family perpetrated a pretty heinous powers-based caste system among their people, where those with "useful" powers were lifted up and the rest were condemned to working in the mines. The characters were generally underwritten and unlikable, and when Attilan blew up at the end of the series, it didn't seem like a terrible loss.

Stuck in all of the mess was Crystal Amaquelin (Isabelle Cornish) and her big, teleporting CGI dog, Lockjaw. Crystal was the princess of Attilan -- her sister and surrogate parent, Medusa (Serinda Swan), was the queen -- and she controlled the elements. Her introduction was remarkably similar to Ariel in The Little Mermaid: there was a royal ceremony (in this case, a terrigenesis ritual) and when it came to Crystal's part in the proceedings, her family realized she wasn't present and was instead off frolicking through the city. She did teleport in when she realized her mistake, and it didn't get her in trouble. This scene really established her character: she's cheerful, naïve and interested in the world around her.

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When Maximus (Iwan Rheon) staged his coup, he kept Crystal on Attilan despite banishing the other royals to Earth. He intended to marry her to secure his position on the throne, despite her sister and his brother already being married, her being markedly younger than him and her obvious disinterest. More importantly, he demanded that she publicly support his rule, but this led to arguably the best moment in the show: Crystal shyly addressing the gathered crowd, saying, "Maximus is king..." and then turning to face him and adding with vitriol, "Of no one."

After this, Crystal and Lockjaw also fled to Earth, presumably hoping to find her sister and the others. Her naivete was again on display -- in true fish-out-of-water fashion -- as she tried to find her way. She was a little bossy, particularly to the veterinarian brought in to tend to a weakened Lockjaw, because she was usually allowed to be, but she learned to apologize. She was initially snotty toward the human race because Attilan taught her that humans were evil and violent, but she quickly realized that wasn't true of everyone. When she eventually reunited with her sister, she said that she'd like to live a normal life on Earth.

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Crystal was clearly disillusioned with the life she led and eager to have new experiences. On Attilan, she was at least somewhat socially isolated and uninvolved in the royal family's politics, but her first trip to Earth showed her that she was interested in making friends and taking an active role in her life.

This, and the fact that the Inhumans ended up on Earth after Attilan exploded, could set up Crystal's eventual reintroduction to the MCU. Thanks to her teleporting dog, she could feasibly appear anywhere in the universe and join up with any character, and Inhumans need not be required viewing because she could explain her backstory in a sentence. She could say, "I'm Crystal, I'm an Inhuman princess from the moon, and I want to see the world and help people!" and that would be all the explanation necessary.

Crystal has a lot of ties to non-Inhuman characters in the comics and has even actively separated herself from her family on multiple occasions. She's been romantically involved with Johnny Storm, Pietro Maximoff aka Quicksilver and Dane Whitman aka the Black Knight; she and Pietro even had a daughter named Luna, who was present in a lot of her stories. She spent time as a member of both the Fantastic Four and the Avengers and she worked alongside S.H.I.E.L.D., the X-Men and many of the Eternals.

Crystal Inhuman

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That being said, those romances aren't likely to happen in the MCU. Pietro is dead and will almost certainly stay that way. There has yet to be an official announcement about the Fantastic Four's place in the MCU. Dane Whitman (played by Kit Harington) will appear in Eternals, but it's not yet clear how he's being adapted for the screen, to say nothing of whether or not he could work as a romantic partner for Crystal.

Romance aside, Crystal could make any number of connections that playfully echo her comics past. Her journey of self-discovery could intertwine with the MCU's already-established Earthbound Inhumans: Kamala Khan aka Ms. Marvel (Iman Vellani) is also a frequent associate of Lockjaw's in the comics, so the two could easily become friends, and if and when the greater MCU reintroduces Daisy Johnson aka Quake (Chloe Bennet), she could also befriend Crystal and even team up with her, perhaps on a new Secret Warriors team. Additionally, a connection between Crystal and Wanda (Elizabeth Olsen) could be cute and referential: they wouldn't be sisters-in-law here, obviously, but they could still be friends and allies, both being powerful women trying to find their respective places in the world.

Inhumans wasn't a great show, but it did set up Crystal's potential place in the greater MCU. She's equal parts a Disney princess who wants to be where the people are, a young woman coming of age and a gentler, girlier version of Thor (Chris Hemsworth) who has to learn how to behave on Earth. Given the chance, Crystal could be a great character and a valuable hero to have in the MCU. And having Lockjaw along for the ride would just be a fun bonus.

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