The Vampires Part 2 (1968)

Makube Rokuro (nicknamed "Rock"), a young criminal genius and master of disguise, travels to China. There he encounters the "Weco" or "Ueko," catlike animals with the power to transform into human form and imiatate anyone they see. Using his the same mysterious power which let him manipulate the vampires in the first series, Rock tames the Ueko and uses their transforming ability to aid his plans for world domination. Separate sections explore the lives of Rock’s previous reincarnations and his long karmic history with the Ueko.

Source: www.anisearch.com/manga/4290