Fantastic concept! You did an outstanding job on the design - there are lots of lovely details that add depth to the character, yet the general silhouette is simple and works amazingly. This is one those illustration that make me want to search and know more about a genre I don't have experience on - mechas.
...this is what it looks like after a steel canine chases it's ball into a parking garage.... after it's ball went into an open stair-well window. It just wants it's ball back, and doesn't care what stands in it's way!!! I am so glad I parked on the upper level - and got that on my iPhone!!!