DoOod, love the new modified accessories you made for these SRCs! That Lego axe works perfect for Mazinger-Z's iron cutters, and the collapsed Scrambler Dash looks friggin Badass!
Okay, you want a missile for the SRC mazinger's Missile Punch accessories: Look at some Lego missiles and missiles from small GI Joe toys... ... you want missiles that are SMALL, as in 1/2 or 1/3 the size of a dime, and not too wide. If you have a ball-point pen that is Clickable, the clicker thing at the top of the pen should give you a visual idea for a Missile Punch. You might even try to make a missle punch out of that clicker!