Mamakos was sent to California to scout locations for restaurants, but he liked Hollywood so much that he decided to stay, declining his father's offers of $50,000 in cash and a $250,000 nightclub of his own if he returned to Boston.

"[2] Peter Mamakos was perhaps best known for playing Greek, Indian, Hispanic, French, Italian and Middle Eastern villains[1] from the 1940s through the 1990s.

[2] Mamakos appeared in Trail of the Yukon (1949), in which he and other supporting players offered what a Variety review called "stock performances".

King, the Metropolis crime boss who engaged a European criminal scientist to invent "synthetic kryptonite".

Kidnapping Lois Lane and Jimmy Olsen, King came closer than any other criminal in ridding the Earth of Superman (George Reeves).