Iida has worked continually in Japan's film, television, anime and manga industries since the early 1980s, predominantly in the genres of horror and science fiction.
[2] For the next few years, Iida found work alternating as a scriptwriter for pink films and as an assistant director for other productions.
Iida soon followed this with his theatrical debut, Battle Heater (1989), a horror comedy about a man-eating kotatsu that terrorizes the tenants of a rundown apartment block.
In the 1990s Iida branched out into television, creating the series Night Head (1992–1993), which would go on to spawn an entire franchise including a made-for-TV movie of the same name in 1994 as well as manga and books.
Iida's most recent theatrical production as director was Dragon Head (2003), a live-action adaptation of the manga series by Minetaro Mochizuki.