Lycee is one of my own original species known formerly known as a ToxicKlaw.
She is badass and really doesn't give a damn about any drama and tends to have an extreme disdain for stupid people.
She can often come off as a real bitch in order to keep people away but with a real soft center once someone is able to penetrate her wall of ice.
On her world, ToxicKlaws take many shapes and sizes, some are just dumb beasts that attack others like Lycee who have an anthropomorphic appearance.
Once a thriving world full of beauty and nature, it had veins of nature running through its very core. It became poisoned and turned toxic after the inhabitants began fighting over who controlled what areas and territories.
This poison eventually passed its way onto the inhabitants, thus giving rise to the ToxicKlaws.
Lycee in and of herself is not a bad Shakaroo, she just has to live in an environment where fighting is the only way to survive.
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Doveux
It's rather apt how well the facial expression matches the description, rather despairing... poor girl.