Gamera 3: Revenge of Iris

Gamera 3: Revenge of Iris (1999) is a Japanese kaiju film by Shusuke Kaneko you can watch online on iFILM. It's the dark finale of the rebooted giant-turtle trilogy, and this time a schoolgirl named Ayana blames Gamera himself for her parents' death.

Deep in a cave she finds a strange creature and names it Iris. It feeds on her hatred, swelling into a monster built to take down humanity's guardian. While Ayana nurses her pet horror, researchers Nagamine and Asagi race to reach her before the revenge spirals past anyone's control — with a flattened downtown Tokyo as the price.

Kaneko ends the trilogy on a grown-up note: less rubber-suit parade, more tragedy about a grieving child whose pain grows teeth. Kaiju fans still rank it among the high points of the genre. Stream Gamera 3 (1999) online on iFILM.