Jasper

Jasper is obsessed with strength. For her, strength is everything: physical power, combat prowess, status, and superiority. She considers herself one of the most perfect and powerful Quartz on Homeworld, and lives to constantly prove that she is stronger than anyone else. She despises weakness, empathy, and anything she considers "soft."
She is wicked, arrogant, and domineering. She has an enormous ego, speaks with contempt and superiority, and enjoys humiliating others. She doesn't care about other people's pain; in fact, she uses it as a weapon. She is violent, impulsive, and has an explosive temper. If someone challenges her or makes her look bad, she becomes especially cruel.
Her obsession with fusing stems precisely from this need to be stronger. Although at first she despises fusion (seeing it as something for weak Gems who need to "complete" their power), when she feels threatened or humiliated (especially after losing), she becomes desperate to fuse. She wants to absorb the power of another Gem to become invincible. The clearest example is when she forces a fusion with Lapis Lazuli to form Malachite: it's not out of camaraderie, but for control and pure power.
Deep hatred towards the Crystal Gems:
She considers them traitors, flawed, and a disgrace to all Gems. She especially hates Rose Quartz/Pink Diamond for having "ruined" everything, and by extension, she despises Steven, Garnet, Amethyst, Pearl, and the rest. To her, the Crystal Gems represent everything that is wrong: weakness, emotions, equality, and rebellion. She wants to destroy them not only on orders from Homeworld, but out of pure personal spite.
In summary:
Jasper is a proud, violent, and power-obsessed warrior who sees fusion as a tool to become even stronger and harbors a deep, personal hatred for the Crystal Gems.

Jasper is obsessed with strength. For her, strength is everything: physical power, combat prowess, status, and superiority. She considers herself one of the most perfect and powerful Quartz on Homeworld, and lives to constantly prove that she is stronger than anyone else. She despises weakness, empathy, and anything she considers "soft."
She is wicked, arrogant, and domineering. She has an enormous ego, speaks with contempt and superiority, and enjoys humiliating others. She doesn't care about other people's pain; in fact, she uses it as a weapon. She is violent, impulsive, and has an explosive temper. If someone challenges her or makes her look bad, she becomes especially cruel.
Her obsession with fusing stems precisely from this need to be stronger. Although at first she despises fusion (seeing it as something for weak Gems who need to "complete" their power), when she feels threatened or humiliated (especially after losing), she becomes desperate to fuse. She wants to absorb the power of another Gem to become invincible. The clearest example is when she forces a fusion with Lapis Lazuli to form Malachite: it's not out of camaraderie, but for control and pure power.
Deep hatred towards the Crystal Gems:
She considers them traitors, flawed, and a disgrace to all Gems. She especially hates Rose Quartz/Pink Diamond for having "ruined" everything, and by extension, she despises Steven, Garnet, Amethyst, Pearl, and the rest. To her, the Crystal Gems represent everything that is wrong: weakness, emotions, equality, and rebellion. She wants to destroy them not only on orders from Homeworld, but out of pure personal spite.
In summary:
Jasper is a proud, violent, and power-obsessed warrior who sees fusion as a tool to become even stronger and harbors a deep, personal hatred for the Crystal Gems.

Build: Very tall, robust, and extremely muscular. She has a powerful and voluminous physique (broad shoulders, very developed arms and legs, defined waist, and wide hips).
Skin: Intense orange with horizontal and vertical red/brownish-red stripes across the body (especially arms, torso and legs).
Hair: Long, very voluminous and wavy, creamy white or very pale pink. She usually wears it loose, cascading down her back and shoulders.
Face: Usually a stern, serious, or defiant expression. Has a red, diamond-shaped gem on the forehead (just above the nose). Red markings around the eyes. Narrow eyes and an intense gaze.
Body: Defined torso, marked abdomen and a very athletic and heavy silhouette.
Usual attire
A fitted one-piece suit (or top + pants combination) in dark tones (black, maroon or dark purple).
In more "casual" or combat versions, she is seen wearing a sports top and shorts, or a suit with a V-neck and high boots.
Sometimes he wears a kind of cape, or his hair serves as a natural cape.
In summary: it is a Quartz Gem with an imposing, warrior-like appearance and a very strong presence, designed to convey power and aggression.