Irma wears a non-standard uniform of the Assassins of Fang, with armored torso cut high to expose the bottom of her breasts. Her cold, callous demeanor rarely shows emotion, but her resourcefulness and cruel tactics—hostages, torture, threats—ensure her missions succeed. Despite her ruthless exterior, she harbors a soft spot for cats, secretly caring for them. Working as a simple cleaning lady in a poor slum, she hides her deadly profession from the world.