Hellboy II: The Golden Army hasn't even completed filming yet, but Guillermo del Toro has already figured out what he would do for the sequel. del Toro tells SCI FI Wire that he and Hellboy creator Mike Mignola wrote the second film so that it prepares the path for a sequel, but can also serve as a capstone for the series.

"The way Mike and I did approach this was, when we were told, 'Think about something, if you want, for a sequel,' we went away and said, 'Let's talk about it,'" del Toro said. "Do we want to continue the story?' We did the first one saying, 'That's it. It's a self-concluding story.' And I said, 'Let's come up with an arc that makes sense for us for the second and third movie.' We said, 'This is the story. This is how we end in the third movie,'" del Toro said. "And then I went in and wrote a self-conclusive screenplay [for the second movie]. So if there's never a third one, I'm perfectly at peace."

In Hellboy II: The Golden Army, the Bureau for Paranormal Research and Defense team, made up of Hellboy (Ron Perlman), Liz Sherman (Selma Blair), Abe Sapien (Doug Jones) and Johann face off against a villain played by Luke Goss as he attempts to conquer the Earth.

Hellboy II: The Golden Army opens July 11, 2008.