Just look at some of the people appearing or involved in these movies:
El Santo, Rene Cardona, Charles Band, Barbara Crampton, Eddie Romero, Patrick Wayne, John Ashley, Sid Haig, George Nader, Vic Diaz, Eddie Garcia, Jim Wynorski, Dom Deluise, Loni Anderson, Jennifer Love Hewitt, Arte Johnson, Jeffrey Combs, Gamera, Shirley Eaton, Frankie Avalon, Klaus Kinski, Wilfrid Hyde-White, Jack Palance, Barry Morse, John Ireland, Carol Lynley, Paul Stevens, Arch Oboler, and Virginia Gregg. Wow.