Gunter Schoß

as Drago / Ronson (13 episodes)

as Zoodirektor Prof. Georg Baumgart (110 episodes)

as Dr. Junghans

as Max (alt)

as Chefarzt Zeller

as Peer Sievert (1 episode)

as Gastgeber (78 episodes)

as Prof. Mannhardt (1 episode)

as Dr. Thomas Straub (1 episode)

as Hans Dieter M.

as Krause

as Maximilian Stich (1 episode)

as Dr. Radke

as Kommissar Schiller

as Prof. Kugler

as Prof. Landmann

as Kriminalinspektor Günther Zorn (31 episodes)

as Udo Bannasch (1 episode)

as Inspector Winterfeld

as Kurt Mühlhans (1 episode)

as Narrator (Voice)

as Dr. Lechner (1 episode)

as Kiewer