Guillermo del Toro has promised there will be a lot more of Charlie Day and Burn Gorman's characters in Pacific Rim 2.
The director is working on a script for the sci-fi action film - set in the future when specialist pilots, played by Charlie Hunnam and Rinko Kikuchi, power giant robots to battle monsters, known as Kaiju, who have taken over the world - with Marvel writer Zak Penn and Travis Beacham who worked on the original.
Charlie and Burn were something of a comedy double act in the first movie, as scientists Dr Newton Geiszler and Gottlieb, who worked on the system that neurologically linked the pilots their robots and were constantly arguing over clashes in theory.
Guillermo told Collider.com: "It's quite a different movie from the first one in that, but I think that two of our main characters like in the first one are Burn and Charlie.
"They are really, really - I mean, honestly, they are probably the guys I have the most fun writing along with Hannibal Chau so just from a purely selfish drive, I like writing them. I love writing for Charlie and Burn.
"I mean, [Burn's] in Crimson Peak [Guillermo's upcoming new film] for that reason, because I love working with him. You're gonna get a lot of that, but the Kaijus are very different and you're gonna see a very different type of the robots I think. It's gonna be quite a different adventure."
Guillermo has previously revealed Pacific Rim 2 will be a standalone story, not a direct sequel of the first movie.
In his latest interview with Collider he added: "It's a few years after the first one. It's not an immediate follow-up. It is the world having been freed of Kaiju, what happens to the world after - what happens to the Jaeger technology once the Kaiju are not a threat. It's quite a jump."