Kiken is an Equestrian tengu from the land of Tochia. She is a bird-dog-pony monster called a yōkai, which are the mythical fauna of Tochia, and is one of the many sentient wild yōkai, a quality that is an infamous curse to yōkai, as sentience clashes with their animal instinct, driving them insane and acting like true monsters. For Kiken, it was mentally catastrophic. Born during post-Chaos War days when Tochia was infested with yōkai and sentient creatures began to inhabit, she was an adopted yōkai that developed sentience and viewed herself a slave after a serious misunderstanding, a misunderstanding which resulted in the regretful death of her loving owner and friend that was vilified by a yōkai hater. Upon learning this misunderstanding when the murders were set up to make yōkai look like monsters and not animals as intended, she ended up letting him win by killing him publicly. This resulted in a long period of public relation repair, ending with the yōkai being discriminated, abused, hunted for sport, and even threatened with extinction once or twice. In extreme grief, Kiken couldn't fight her feral mentality and killed not just anyone she didn't like, but killing anyone in general, especially during the Great Fear Wars when Pitch Black instigated global racial fear, hate, and discrimination, becoming a transgressive monster and the worst yōkai of all time. But after living for eons into present times when morals grew, she did and thus she no longer murders unless she has to, but still has serious difficulty fighting her primal instinct. Her anger issues are fear-inducing, she is hard to understand because of her animalistic behavior and mood swings, and though she doesn't speak, her extremely ominous attempts to form speech make her hesitant to be around. She will eventually find a place when she meets Twilight Sparkle, her friends, and the Shell Lodge Squad, whom she attacks multiple times seeing them as threats, and eventually trusts them after being controlled by The Yōkai King into starting a rampage and being reminded of the incident that ruined yōkai forever when she was commanded to kill them in public to scare everyone in Tochia to swear allegiance to him, as she only defeats him without killing by scaring him out of Tochia, and not only becoming the queen of all yōkai, but the Guardian of the abused Hoshi-no-Tama. She has a similar personality to Elfen Lied Lucy, but is toned down in graphic violence and transgression.
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