TV-Series
Description
Katia Waldheim is a central character in the anime Schwarzes Marken, initially introduced as a young soldier of the West German army. Standing at 155 centimeters tall with brown hair typically tied in a long ponytail and amber eyes, she has a small, petite stature that belies her inner resilience. Her age is fifteen, and she holds the rank of Leutnant, equivalent to a second lieutenant.

Originally from East Germany, Katia was born under the name Ursula Strachwitz. She is the daughter of Alfred Strachwitz, a celebrated war hero who later became a dissident leader. To protect her from political persecution, her father secretly sent her to live with family friends in West Germany under the assumed name Katia Waldheim. She later joined the West German army, serving in the 101st Battalion. Her return to the East occurred under dramatic circumstances: after her entire unit was annihilated in battle, she was rescued by the 666th TSF Squadron. Following this, she applied for defection and was transferred to the 666th as a replacement pilot, a decision that initially drew suspicion from both the squadron's protagonist, Theodor Eberbach, and the secret police, the Stasi.

Personality-wise, Katia is defined by her unwavering idealism, a trait that makes her stand out sharply in the cynical and oppressive environment of East Germany. She genuinely believes that the division between East and West is the true enemy of humanity, and that the two Germanies must unite to stand a real chance against the alien BETA threat. She is friendly, energetic, and eager to help, often demonstrating a clumsy yet endearingly earnest nature. However, her optimism is paired with a strong stubborn streak and an incorruptible moral compass; she is not afraid to speak her mind against the socialist regime's dogmas, even when it puts her and those around her in danger from the Stasi. Her idealistic speeches about reunification and her tendency to act on her principles cause friction with the squadron's political officer, Gretel Jeckeln, who views her as a dangerous subversive.

Despite her lack of combat experience compared to the veteran pilots of the 666th, Katia possesses a remarkable natural talent for piloting Tactical Surface Fighters. Her aptitude is described as an instinct that cannot be taught, leading many to view her as a potential ace pilot. A notable demonstration of her ability is her rapid conversion from the West German F-4 Phantom to the East German MiG-21 Balalaika, a process that normally takes a day but which she masters in only three hours. Her mechanical inclination also endears her to the maintenance crew, who appreciate her willingness to work hard and learn.

Her key relationships are primarily within the 666th Squadron. She shares a significant bond with Theodor Eberbach, who rescues her and becomes her mentor and protector. Their relationship is complex, starting with his suspicion of her as a potential spy and gradually evolving into a deep mutual trust and debt of gratitude, especially after she risks her life to save him. She also clashes intensely with the squadron's political officer, Gretel, who frequently slaps and reprimands her for her subversive political comments. In contrast, the squadron commander, Irisdina Bernhard, shows an oddly protective attitude toward Katia, suggesting she knows more about her true past than she lets on.

Throughout the story, Katia undergoes significant development. Her journey involves a shift from a naive and somewhat sheltered defector to a more resolute and mentally strong individual who confronts the brutal reality of the regime head-on. It is eventually revealed that her father, the war hero Alfred Strachwitz, has been purged and executed by the Stasi for undisclosed reasons, erasing his records and legacy. Confronting this personal tragedy, Katia abandons her pseudonym, revealing her true identity as Ursula Strachwitz. She embraces her father's revolutionary spirit, declaring her intent to become a catalyst for change against the Stasi's coup, solidifying her transformation from a simple refugee to a determined revolutionary figure.