In einem Interview mit dem grieschischen Magazin "Metalzone" erwähnt Ex-Helloween und Gamma ray Boss Kai Hansen, dass er offen für eine Reunion Tour mit seinen alten Kollegen wäre:

Metalzone: HELLOWEEN are releasing a "Keeper of the Seven Keys - The Legacy". How do you feel about that?

Kai Hansen: "Well, you know, whatever they want to do, it's fine with me, no problem. They can do whatever they want. My first thought was that I just wouldn't do it because it puts you so much on a basis to be compared to the old 'Keeper' [albums] and that can… 'Cause many fans are very nostalgic, and maybe I am too, to say that when I hear the title 'Keeper', I wanna hear Michael Kiske singing. If he doesn't sing, it isn't 'Keeper'. Whatever the songs are like and stuff like that. That is a brave move, so to say, 'cause it might be not so easy to accept."

Metalzone: It's always difficult to repeat a success as big as the "Keeper" [albums], in my opinion.

Kai Hansen: "Right, and that’s why I wouldn’t do it. It's like it was an era, it was a basis and I would prefer to go for something new, something different."

Metalzone: Would you consider reuniting with HELLOWEEN?

Kai Hansen: "Reunion with HELLOWEEN? Who's HELLOWEEN? If you're talking about Michael [Weikath], Markus [Grosskopf] and Michael [Kiske], I would do a tour with them and play the old stuff. That would be something I would really like to do — it would be very nice. And of course we would have to find a drummer that could carry the spirt of Ingo [late HELLOWEEN drummer Ingo Swichtenberg] somehow to the stage. But it would be a nice thing, because I think before we get too old we should do it. But it's not up to me, and of course I'm happy with GAMMA RAY and there's no problem. It really depends on the others."