Melmetal, and its Gigantamax version. I am honestly surprised this one works.

This is also my first and last time training a gigantamax pokemon. Getting rid of the red outline and the clouds above their head can be a little challenging (you might still see extra red at some points. Put red outline and red lighting in negatives in these cases).

Either way, enjoy.

You can use reflective body for original, and shiny body for gmax version to make their bodies more reflective, like real reflective metal.

Also do NOT use pokemon (creature) when generating gmax version, I only tagged that on the original as to keep the two from mixing together.