[@Black Alice]
Her edginess and yandere tendencies will be played for laughs rather than seriousness, to contrast the more sugary characters. She's going to be the crazy/evil teammate that by the end will convert to the message of hope and friendship through shared experiences. As for power levels, I don't mind if she never wins any fights, since I planned her fighting style purely around her personality rather than any real strategy. She does her own thing and if that works, then good for her. If not, then hey, she gets the despair she craves.