Kurt is a rogue government agent and an antagonist is Superman: The Animated Series.
He and some government agents took Claire at an early age. They used her in a project called Project Firestorm. When it was shut down by the government, Kurt wanted to find her and continue it regardless. he managed to find and captured Claire using her fence Donnie. Kurt takes her to an underground facility and plans to send Volcana to another government to dissect her. Superman arrived and told Kurt that Kurt is doing for personal gains. Kurt had his men attacked Superman. Volcana broke out of her containment and went after Kurt. After cornering Kurt, Volcana plans to burn him but was stopped by Superman. Volcana set off the gas tanks which killed Kurt anyway,