July 17, 1966 –
The first episode of Ultraman, a follow-up to Ultra Q, though not technically a sequel or spin-off, debuted on Japanese TV on this date.
Due to its extensive special effects involving large-scale alien creatures, the production process was challenging, making such large-scale tokusatsu TV dramas (tokusatsu is a Japanese term for live-action films or television programs that make heavy use of practical special effects,) unique worldwide at the time.
The Haus of Dcaligari 