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Xiong's a psycho. She giggles at bleeding and torture and don't even start with killing. She grins wildly at everything and tends to talk to herself or Kumatan. She yells at Kumatan, who growls back at her. She seems to have no morals what so ever but she has one. Protect your friends with everything. Meaning if you actually do befriend this psycho, you'll have someone very loyal and willing to kill anyone for you. Which is a good and a bad thing really. She's also a glutton and will eat anything that'll fit in her mouth, humans included.
Xiong was born in an brothel. Her mother wanted her to become like her. She escaped her fate as one of the girls by killing everyone. She stood among the bloodied walls and laughed for 3 whole days before she got up and left, wandering for a bit. She also lived off the forest, which could mean a number of things, really. Not much else is known, seeing as she laughs wildly when confronted about her past.
When Swindlers Start Laughing by Hatsune Miku
She carries two large hand claws that are used for killing, mauling, maiming, eating and torture. The fact she can use such a simple tool for so much shows her intelligence.