Tinkerunzel

Jasper Quartz has joined this crossover from the Steven Universe universe in order to show you all how it's done. She is the perfect quartz warrior who was so perfect, she was born flexing. She is also John Cena's ex-wife.

Personality
Jasper is ruthless and headstrong, as well as a brutal combatant. Assumed to be a high-ranking Gem warrior and veteran of the Rebellion, Jasper is very authoritative and militaristic which directly affects her subordinates, Peridot, and Lapis Lazuli. She does not care about them, doesn't bother to heed their warnings or concerns, and will not hesitate to browbeat them into submission if they complain or disagree with her. The prejudice that Jasper exercises based on combat experience leads her to look down upon beings that appear weaker to her.

Her attitude towards those whom she considers having proven themselves in battle, however, is a much more positive and respectful one. When she first arrives on Earth, she quickly dismisses Garnet, Amethyst, and Pearl as weaklings not worth her time. She did, however, express disappointment after finding out that Rose Quartz wasn't present because she wants to face her in battle, as she respects her as the military commander of the war. Likewise, this causes her to be confused and frustrated as to why Rose apparently shape-shifts into a human boy to fight.

In "Chille Tid", Jasper appears furious and unhinged. The most probable reason being the extended period that Jasper has remained immobile, trapped with Lapis in a seemingly endless power struggle in Malachite, held down with the weight of Earth's ocean and unable to escape the fusion. She is also shown to have developed a hatred towards Steven, attempting to attack him until Lapis gains control.

She initially possessed a disdain for the act of fusion, claiming that it was "just a cheap tactic to make weak Gems stronger!" When Garnet defeated her and crashed the Gem Warship, the prospect of a humiliating defeat at the hands of the Crystal Gems revolted her so much that, in a desperate and hypocritical attempt to seize victory, she compelled Lapis Lazuli to fuse with her to form the unstable fusion Malachite. The two became trapped in a single body for an extended duration, and in that time Jasper became addicted to the massive increase in combat strength that Fusion supplies; in "Super Watermelon Island", Jasper's personality spoke through Malachite, declaring that there was "more to this fusion thing" and that it opened her mind to a new world of possibilities. Presently, she is in an unfused state, but her stance on Fusion has completely turned to one of total approval, albeit for perverse reasons, which eventually lead to her corruption after fusing with the green Snow Monster. However, despite her change in views on fusion, in "Crack the Whip", she is shown to be repulsed by Steven and Connie's fusion Stevonnie, due to them being a fusion between a Gem and a human.

At the expense of all else, Jasper's mindset on victory is her primary focus. Without the prospect of a challenge, she considers the task at hand a waste of time. Jasper will even forsake her beliefs if that means she will come out on top. Interestingly, as long as they fought on even terms Jasper does seem to respect those who best her in combat, implying she has a warped code of honor.

In "Alone at Sea", while still being as cruel and ruthless as before, Jasper appears more pathetic than in the past, with various attempts to convince Lapis that she has changed to take her back. Jasper also appears much more unhinged and unstable, having become completely addicted to being Malachite and the power they possessed together. After Lapis refuses to fuse with her again, she scornfully blames Steven, going as far as attempting to "shatter" him.

In "Gem Hunt", Jasper is shown to be ruthless and carefree about injuring and poofing the Corrupted Gems. Jasper even forcefully pulls the gemstone out from one of the monsters' body, showing no remorse afterwards.

In "Crack the Whip", Jasper reveals that she has enslaved the Gem monsters that she retrieved at the Great North to create her own personal army. She is shown to be somewhat sadistic, as while fighting Amethyst, Jasper shows no regards for her feelings as being defective and appearing to take delight in seeing her suffer. Jasper believes Amethyst isn't a true Quartz soldier, telling her its why she is so weak. Jasper even insults Rose Quartz's standards, knowing that it would enrage Amethyst. When one of the monsters became injured in battle from Lion's attack, the monster tried to flee, but Jasper didn't let her, grabbing her tail and flinging her back to herself. She is also shown to possess a willingness to kill as she was about to finish off Amethyst by destroying her gemstone, but was stopped due to Stevonnie's intervention.

In "Earthlings", Jasper has been shown to have no respect for any Gem that does not maintain their role in worshiping the Diamonds. She also seems to hold her herself in high regard, believing herself to be better than Earth. It is also revealed that Jasper's hatred toward Steven (and by extension, Rose) is because of what Rose did to her Gem colony, her planet, and Pink Diamond, making her seek revenge, which is the reason she returned to Earth to fight the Crystal Gems. It is hinted she harbors a bit of sorrow because of the loss of her Diamond as well. She also seemed upset that no-one she has ever fused with (Lapis and the Gem monster) liked fusing/being with her, showing a somewhat insecure side. (Copied from the Steven Universe wiki, thanks.) She also secretly likes listening to J-Pop and High quality video game rips. (Especially Fleenstones and the Nutshack.)

Abilities
All Era-1 Gems have various powers, including the ability to invoke a weapon, change shape, and strength, agility, speed, and skill beyond human capabilities. Jasper can also take refuge in her gemstone after being wounded to heal. She is also capable of fusion, as shown when she fuses with Lapis Lazuli to form Malachite and later a corrupted Gem to form a centaur-like monstrosity.

Being a Quartz Gem, her creation was to fit the role of a warrior within Gem culture. According to Peridot (a certified Kindergartener skilled enough to identify the type of Gem that emerged from a particular exit hole with a glance), Jasper is the 'ultimate' Quartz, made completely perfect, implying she is a superior specimen even among her own kind. As such, she has incredible amounts of physical strength and stamina, making her one of the most physically imposing Gems seen thus far. She is also strong of will, as it takes all of Lapis' concentration to subdue Jasper. Jasper's strength is further emphasized in "Alone at Sea" when she climbs up the anchor chain on the side of the ship, making the entire ship shake and creating a loud thumping sound. This happens once more when Jasper steps onto the ship.

Jasper is also one of the most durable Gems ever shown in the series, being capable of withstanding the point blank explosion of a Gem Warship's reactor, the following crash and explosion of the entire ship unprotected, being hit with enough force to send her flying over the horizon, and being struck with enough force by Rose Quartz's Sword (which has the power to easily destroy a Gems' physical body) to be driven through a Corrupted Gem (poofing it in the process), all without poofing once. It takes Peridot driving a piece of scrap metal clear through her chest and out her back to finally poof her, and even then that was only after she'd been corrupted. (Also copied from the Steven Universe wiki) She also can make incredible protein shakes and can flex so hard she can create destructive shockwaves of pure awesomeness.

Role in the crossover
Jasper is the main antagonist of the story arc, "The Big Four take it up the butt" where she begins adopting all the Chiweenies in the world in order to build an army to get revenge against Rose Quartz (Now Steven) and the Crystal gems for embarrassing her at prom by asking Todd out instead of her. She plans on using her Chiweenie army to win every dog show in the world because Steven (Rose) doesn't have a dog, just a stinky old cat lion. Thus, embarrassing him. The Big Four then have to smuggle all the Chiweenies out of Jasper's Crystal Flexing Gym by stuffing them up their butts and stealing her supply of protein shakes so she can't have mad gains anymore.