Disguised as an ordinary dog named Lena, nobody could imagine her true face. Because at night, the harmless animal turns into a high intelligent assassin. She kills for honour, money, fun, for her there is always a reason to murder.

Gore-Rilla The Ringmaster and Tony Tarsier battled her several time back then in B.E.A.S.T.-City but never managed to catch her. But some day she just disappeared. Nobody knows where she is but some are thinking she is hiding in the dark, waiting for the right moment for her return. Waiting for her last deadly strike against her rival Gore-Rilla.