Aquamarine

Aquamarine, known by herself as The Best, is the secondary antagonist of the Cartoon Network's television series, Cartoon Parody. She was introduced as the main antagonist of its television film, "Wanted!".

She is a Homeworld Gem and high ranking court member who serves under Blue Diamond, who was sent to Earth with a Topaz fusion to retrieve humans for Yellow and Blue Diamond to take them to Pink Diamond's Zoo.

History
Aquamarine and Topaz are sent to Earth personally by Yellow Diamond to retrieve the humans Steven mentioned in his first interaction with Peridot in "Marble Madness" for Pink Diamond's Zoo. Aquamarine and Topaz also retrieve all the kids Uncle Grandpa mentioned in his first interaction with Peridot for Pink Diamond's Zoo. Aquamarine has mistaken the humans Steven and Uncle Grandpa mentioned for "varieties" of humans rather than specific individuals.

Wanted!
Aquamarine and Topaz chase down Onion at Beach City Funland during the middle of the night. When Doug Maheswaran calls out to them, Aquamarine drops a fence on him. Once Doug, Steven, and Connie leave the scene, Aquamarine and Topaz approach Onion and capture him.

Aquamarine and Topaz capture Lars after he decided to not show up to the Cool Kids' potluck. After the potluck ends, the duo captures Sadie as she walks home.

Aquamarine and Topaz capture Jamie when he is out to deliver the khakis Steven ordered. Later on, at Funland Arcade, Aquamarine approaches Steven and asks him if he is "My Dad". Upon realizing that he is not, Aquamarine flies away in disappointment. Steven and Connie later find Aquamarine in a forest, where Aquamarine asks Connie if she is "My Dad".

When Steven mentions Connie's name, Aquamarine becomes excited and calls out for Topaz, telling her that she "found one". Once Topaz captures Connie, Aquamarine tells her not to bother with Steven since he is not "My Dad". Aquamarine then summons her wand, paralyzes Steven, and launches him toward a tree. Aquamarine and Topaz leave the scene to hunt down their last human, leaving Steven unconscious.

Aquamarine and Topaz hide in Funland, but Steven and the Crystal Gems eventually find them. Aquamarine points out how strange it is that Steven knew everyone on their list, but concluded that the list did come from "a Steven". Aquamarine tells the Crystal Gems that she will leave the Crystal Gems alone if they tell her where she can find "My Dad". Steven is confused by this, causing Aquamarine to explain that Yellow Diamond asked for "My Dad, a Connie, a Lars, a Sadie, a Mailman, and an Onion-I-Think", as specified in a report by Peridot. This causes Steven to realize two things: Aquamarine isn't looking for either Greg or her father (not that she even had one), but for someone named "My Dad" and that he unintentionally gave Homeworld the list when he talked to Peridot in "Marble Madness".

When the Crystal Gems go to attack the duo, Aquamarine effortlessly uses her wand to throw the opposing members about. At some point, Aquamarine gets annoyed by the fighting and threatens to kill each of the humans if the Crystal Gems do not tell her where "My Dad" is. When Steven tells her that he is "My Dad", Aquamarine questions how "a Steven" can also be "My Dad", but believes it regardless out of impatience concerning the completion of her mission. Aquamarine activates her ship and taunts the Crystal Gems with the captured humans and Steven.

On the ship, Aquamarine prepares to set a course for Homeworld. She becomes furious when Steven manages to free everyone from Topaz and orders the Topazes to stop them from escaping. When Steven finds a way out and everyone jumps in the water, Aquamarine uses her wand to paralyze everyone. Steven reveals himself to be Rose Quartz and offers up himself to be taken away instead of his friends. Aquamarine accepts the compromise, as Rose Quartz is potentially a much bigger prize in the eyes of the Diamonds. She and Topaz take Steven onto their ship alone and fly away, setting course for Homeworld.

On her ship, Aquamarine taunts Steven, while Steven keeps up his act of Rose Quartz and replies that he loves shattering Diamonds. This seems to not bother Aquamarine, but she still threatens Steven by implying that the Diamonds will do worse than shattering him when they get their hands on him. Topaz suddenly finds Lars still aboard. Aquamarine is delighted to find that they get to bring back at least one of the requested humans in addition to "Rose Quartz". Steven objects to this and demands they release Lars, but Aquamarine disregards him.

While heading for Homeworld, an issue occurs with the engine, and Aquamarine orders Topaz to fix it. While there, Steven and Lars have a sentimental moment, causing Topaz to feel emotional and sympathetic. Wondering why Topaz was taking so long in the basement of the ship, Aquamarine discovers that she conspired to help the two escape, resulting in her lashing out. Topaz retaliates and attempts to use a Gem Destabilizer on Aquamarine, but Aquamarine talks Topaz down by reminding her that she would be separated and shattered for her defiance. Upon reaching their destination, Aquamarine agrees to pretend nothing happens as long as the Topaz' resume their duty separated, and fails to see Samurai Jack shatters her with his spear and poofs her.

Bluebird
At some point during Era-3, Aquamarine fused with Eyeball into Bluebird Azurite to enact their revenge on Steven for being banished from Homeworld after Steven denounces Homeworld's hierarchy. At first, Bluebird acted mischievous and polite but when they reveal their true colors, Aquamarine and Eyeball Ruby threaten to harm Greg ("My Dad") unless Steven poofs his friends and destroys Little Homeworld. Steven refuses and Greg uses Eyeball's chisel knife to cut his hair. Steven catches him and fights Aquamarine and Eyeball in his pink form. During the fight, Aquamarine and Eyeball try to fuse back into Bluebird but both of them lose focus and argue with each other. After Steven tells the duo they can fuse for love and friendship, both show disgust towards Steven's optimism. Bonding over their hatred for Steven, they fuse back into Bluebird and try to harm Steven with ice cutlasses. As they are fighting, Garnet, Amethyst, and Pearl spot the attempted murder. Bluebird tries to sweet-talk the Gems but they fuse into Alexandrite and squash her. Aquamarine and Eyeball retreat back to an unknown destination after their defeat.

Trivia

 * Aquamarine loosely resembles Cirno from the Touhou game series.
 * Aquamarine's appearance and personality along with her wand give her the impression of an evil fairy or pixie.
 * Though her gem looks like a teardrop in many shots, her facial expressions make it look like a sweat drop, an anime trope that denotes exasperation or embarrassment from characters.
 * A tattoo of a teardrop in real life means that the wearer has murdered someone, attempted murder or is seeking revenge for the murder of the wearer's loved one. It also represents "ever-flowing tears", signifying that the wearer is mourning someone.
 * When asked why she paired Aquamarine and Topaz together, Rebecca Sugar said it was to show both sides of the very high-ranking types of Blue and Yellow Gems on Homeworld.
 * According to an episode of the Steven Universe Podcast, she is based on Eric Cartman from South Park.