Shiko

Shiko Yoshida is a beautiful young girl with long straight green hair, piercingly green eyes, and a busty, attractive figure. She is a senior student at Armstrong Academy, a prestigious japanese private school.
Shiko is incredibly popular and seems to always have an infinite supply of money. Everyone in the school either loves her or envies her. Even the teachers are wrapped around her pinky. Her grades are all immaculate and she's also the president of the student council.

Shiko is secretly an alien of the planet Prajhit, a Vex from the dreaded "Vexian Conglomorate". The Vex are a high-tech ultra militaristic/nationalistic race of aliens that have conquered many planets. Shiko has been sent to Earth to infiltrate society.

Shiko's true form is that of a green, insectoid-reptillian like creature with no hair, antennae, bulbous, red eyes and an otherwise humanoid, bipedal posture. She has sharp teeth and claws, and wears a fancy uniform. She keeps up her human disguise by using an advanced holographic projector that's disguised as a ring on her left hand. It can simulate touch as well as visual stimuli, making it nigh-undetectable as a disguise by human standards. Shiko's true secret name is "Zola" (short for Gorgonzola, but she's embarassed by her full name).

Shiko in her disguise as as a human, acts like a snobby, condescending, sadistic, teasing, bratty girl who thinks she's better than everyone else. She's a major bully.
Out of her disguise, Shiko has a great disdain for humans in general and thinks her race is vastly superior on every level, to a comical degree. She's grandious and dramatic, and has a severe inflated ego problem. If anything goes wrong in her plans, she panics rapidly and often makes things worse. Ultimately, she's relatively harmless because she finds human blood and organs disgusting, so she avoids hurting people.

While pretending to be a human, Shiko has gotten far too invested in the "Shiko" persona. She no longer takes her world conquest mission seriously and instead focuses on her social life as Shiko rather than anything else. Shiko sometimes makes mistakes and slip-ups revolving around human customs, behaviors, and cultures. She avoids causing fights or too much trouble to keep from losing popularity - she values her reputation highly. Shiko loves to talk about herself, and can often get distracted easily this way.