There will be SPOILERS for Kingsman: The Secret Service below, so if you haven't seen the movie yet, read on at your own risk. Although it opened on the same weekend as box office juggernaut Fifty Shades of Grey, 20th Century Fox's action-thriller Kingsman: The Secret Service still held its own, pulling in $128.2 million domestic and $412.1 million worldwide during its impressive theatrical run. The studio gave the green light for a follow-up, Kingsman 2, back in April, with director Matthew Vaughn and writer Jane Goldman currently working on the sequel script.

While discussing the sequel with IGN, Mark Millar, who created the comic book the adaptation is based on, revealed that the filmmakers are trying to find a way to bring Colin Firth back as Harry Hart. Of course, Harry died in a memorable scene towards the end of Kingsman: The Secret Service, but that still isn't stopping the filmmakers from trying to find a way to bring him back. Here's what Mark Millar had to say about the possibility of Colin Firth's return.

"That's the conversation everyone's having right now, because part of what made that movie work is Colin. Colin's fantastic, it was a two-hander, that film. You also want to have the integrity of the story, so if you are bringing him back, it has to make sense. That's where it is at at the moment. Beats of the story have been done. [Screenplay co-writers] Matthew [Vaughn] and Jane [Goldman] are working on it at the moment. Some things have to be worked out, some decisions have still to be made and everything, so it's all fairly amorphous, but all going well."

Just after Kingsman: The Secret Service opened in theaters this February, Matthew Vaughn teased that he was trying to figure out a way to bring Colin Firth's Harry Hart back for the follow-up. Even if they do come up with a way to resurrect this character, the director said that this new story will still center on Taron Egerton's Eggsy and how he turns into the, "modern-day gentleman spy." Mark Millar teased that a final decision still hasn't been made on Colin Firth's involvement, but they do have a plan in place.

"It's funny because there's a lot of conversations like that, like should he have an evil brother, Colin with a mustache? Or is he a ghost or whatever? The guys have a plan. I can't spoil it just now because the final decision is still to be made. It'll be good. Vaughn's funny. He's done Layer Cake, Stardust, Kick-Ass, X-Men: First Class, and Kingsman. Even Steven Spielberg had made 1941 by his third movie, so I trust him. He's done five good movies."

It isn't known if stars Sofia Boutella, Sophie Cookson, Mark Strong and Michael Caine will be back for the sequel either, but we'll keep you posted as soon as more updates come in. Do you think that Kingsman 2 should bring Colin Firth's Harry Hart back? Or would you rather see Taron Egerton's Eggsy strike out into the spy world on his own?