I have been working on a new fanfic, known as Era of the Kaiju (although the title may change to Dawn of the Kaiju in the future). Basically, its going to be long. As in a series of novels long for the entire story. With that said, I have a lot of work ahead of me, but expect Part One: Island of Monsters, to be out by the end of next summer.
This thread is something that I have thought up of recently. In this insanely long story, which Kaiju would you like to see battle each other? The list of potential monsters is huge: Every single Gamera kaiju and almost every single Toho kaiju, with the exceptions including King Kong, Frankenstein, a baby Godzilla of any kind, and Zone Fighter monsters. (although this may change.) There will also be some Godzilla video game monsters, like Krystalak and Balkzardan, as well as some unused monsters like Bagan, the Lightning Bug (under a different name), and Mogu. There will also be some non-Japanese monsters sprinkled around here and there, those of which confirmed so far are Reptilicus, Rhedosaurus, Giant Ants, and Immoogie. There will also be Zilla Jr and C-Rex involved as well, with possibly more Godzilla: The series monsters coming.
So, which monsters do you think should duke it out and why?
Edit: I should probably note that most monster versions (Godzilla Showa, etc) do not apply, with the exception of Gigan, Ghidorah, Moguera, and Mechagodzilla.

