A student in Alice's class and also a member of the Organization. Like her nickname suggests, she can quickly sense an attack and move out of the way like a cockroach. She also uses this ability, which she calls "Air Direction", to sense certain objects such as Alice's Kumoito. She wears her hair in twin tails and has two antennas which are shown to move when she sense the flow of air. A sadomasochistic girl, she likes being hated as much as she loves to abuse others.