Guillermo del Toro has revealed how he reverted back to childhood during the making of his new film Pacific Rim.
The 48-year-old filmmaker admitted making the blockbuster featuring giant robots and aliens, and starring Idris Elba and Charlie Hunnam, made him feel younger again.
"When I was doing this movie, something happened to me that had never happened to me on a movie - every week, I would find myself smiling like a moron," he recalled.
"I have seen it 130 times now, and every time I enjoy it. That is only a testament to loving the movie very much."
Guillermo, the director behind Blade II, Hellboy and Pan's Labyrinth, co-wrote the screenplay with Travis Beacham.
"It was a project that encompassed every single thing on my wish list, visually, atmospherically and emotionally. It's an unstoppable, thrilling adventure about pilots and giant robots up against alien monsters, the likes of which we've never seen," he said.
While comparisons to Iron Man, Transformers and Godzilla may be drawn, the Mexican director said he didn't draw any inspiration from Iron Man director Jon Favreau or Transformers filmmaker Michael Bay.
"I wish I knew why Jon or Michael did this or that. For me, the era of giant robot movies started when I was eight years old and I've been waiting patiently to get it made," he added.
Pacific Rim is in cinemas now.