Despite the fact that a poll - ran by director Guillermo Del Toro, no less - seemed to indicate that the cinemagoing public wanted to see a third Hellboy movie, the sad reality is that it just isn't going to happen.
On Twitter just a few hours ago, Del Toro broke the news that "the sequel 100% the sequel will not happen," which is damn shame for people who like slightly weird comic-book characters and films. Back in October 2016, Ron Perlman admitted that he "doesn't talk about Hellboy 3 anymore", primarily because he himself didn't seem all that interested or hopeful of it coming together.
Hellboy 3 Sorry to report: Spoke w all parties. Must report that 100% the sequel will not happen. And that is to be the final thing about it
— Guillermo del Toro (@RealGDT) February 21, 2017
Despite the love for the franchise, it's not all that surprising that it isn't happening. Hellboy made just $99.3 million worldwide against a production budget of $66 million, whilst the sequel - Hellboy: The Golden Army - performed slightly better, making $160 million against a production budget of $85 million.
While they both likely didn't lose money, they obviously didn't perform well enough to get Universal or Sony jazzed about going in for a third film. Del Toro, by all accounts, was open to making the film happen, but it appears that neither Ron Perlman - who plays Hellboy - or creator Mike Mignola are particularly interested in it.
It's a shame, but at least Pacific Rim: Uprising is still happening.