Maria Trovaya was the daughter of Dr Janos Trovaya, an Hungarian genticist and entromologist, who was killed in a suspicious laboratory explosion. Maria became Henry Pym's first wife. On their honeymoon, she was kidnapped by Communist agents and supposedly killed, despite Pym's efforts to rescue her
Maria Trovaya as "MODAM" (Mental Organism Designed For Aggressive Maneuvers)
A woman claiming to be Maria Trovaya appeared years later as a Communist test subject. However, she was quickly revealed to be a fake, and instead mutated further into the super-criminal MODAM.