Lupin the 3rd: The Mystery of Mamo

The Mystery of Mamo (ルパン三世ルパンVS複製人間 Rupan Sansei: Rupan tai Fukusei Ningen) is a Japanese animated film made in 1978 under the direction of Soji Yoshikawa. It was the first film that was made based on the story of the character Lupin III, created by Monkey Punch. The film's plot follows master thief Arsène Lupin III and his attempts to foil Mamo, a wealthy and powerful recluse, and his bid for immortality.

Toho Dub (1979)
As stated above, due to lack of localization of any known credits of this dub, the dubbing cast is unknown. The only exception is William Ross and Greg Starr. Other members of the cast are up to speculation. The ones marked with an asterisk (*) are intended to be treated as speculation from voice identification (Frontier consistently used many of the same Tokyo-based expats in their dubs).