So the trivia of Garasharp says at one point was meant to have two heads and breath fire. But these traits are from this guy.
I also feel like posting a gallery of missed concept kaiju you all missed.
Now, enjoy the post that has interviews with Toho staff about Mecha-Mothra, Godzilla vs MechaniKong, Transforming MechaGodzilla and more! http://tohokingdom.com/forum/viewtopic.php?f=1&t=11103&start=860