Carl Zimmer is a character who makes a one-time appearance in the Season 1 episode titled Daddy's Gone A Hunt'n (episode).
Carl Zimmer is a KGB intelligence agent. He scours the streets of Ho Chi Minh city and finds Ho Minh Truong, the son of USAF Major Sam Roper and his Vietnamese wife Nhi Houng Roper. He then contacts the Ropers and offers to trade the boy for the latest American tactical fighter. Major Roper must divert the aircraft during a ferry flight to Alaska and take the plane to Omrylkot in Russia. The plan fails as the FIRM gets intelligence about it and sends Hawke to intervene. Roper is stopped from delivering the plane. Instead, Airwolf flies to Omrylkot and rescues the boy. Zimmer is left alive at Omrylkot after Airwolf's raid. It is not clear what happened to him but it is likely that he is punished for his failure.