Mexican filmmaker Guillermo del Toro said he was a child when he first became fascinated with Japanese animated "kaiju" films featuring dueling giant-sized monsters.

"I grew up in the 1960s, the decade when the "kaiju" genre was at its peak" and "all the animated series that a child could see in Tokyo were in Mexican culture," the 48-year-old director told Efe before Thursday's world premiere of "Pacific Rim," which pays homage to that mythology.

"Pacific Rim," Del Toro's eighth film, is about an epic futuristic battle between people and monsters from the bottom of the sea.

Humans ally themselves with giant robots known as "jaegers" - inspired by Japanese "mecha" films (a science fiction genre centered on robots or machines) to do battle against the "kaiju," monstrous creatures that emerge from the bottom of the sea and are bent on eradicating life on Earth.

"When I had a fever as a small child, I dreamed about giant robots, and I loved the 'kaiju' robots because they were an enormous spectacle. Now those films are seen with humor or nostalgia and in 'Pacific Rim' I wanted to provide a fresh and spectacular look at those two mythologies for a new generation," Del Toro said.

The director said earlier this month that "Pacific Rim" has scenes never before seen in a movie.

"The film is unbelievable in terms of the action scenes, the size and how spectacular it is ... you are going to see scenes that I believe have never before been seen in cinema, in any film," the filmmaker said in a press conference in Mexico City. EFE