Helga Mittermeier operates as second-in-command of a specialized counter-terrorism unit, the disciplined counterpart to her commander's nurturing approach. Her expertise lies on the frontlines of counter-terrorism operations. Born in divided Cold War East Berlin, her life fractured at eighteen during an engagement to Walter Heinz, a foreign reporter. Their wedding ceremony shattered when Heinz was exposed as a NATO spy and executed. This public betrayal brought severe ostracization and the loss of her unborn child. The trauma and humiliation propelled her defection to the West, an escape marred by an undignified tumble down her residence stairs, severing her final ties to East Germany. Her professional partnership with the commander, forged through shared training, evolved into an exceptionally close personal bond marked by deep mutual concern. This connection surfaces powerfully in crises, like when the commander, delirious from head trauma, called out for Helga. She vigilantly monitors the commander's wellbeing during missions. While often captured or incapacitated during operations, heightening stakes, Helga steps into command with competence during critical incidents like "Atomic Connection" and "Heaven's Gate" when needed. She holds unique privileges, including using an intimate nickname for the commander restricted to her alone. Her East Berlin past resurfaces occasionally, notably in the "Blood Bridal" episode revisiting her escape and betrayal. This history contributes to her reserved nature, though she retains a capacity for dry humor, acknowledging her dramatic exit was thwarted by tripping on stairs.