So, /m/, what are some of your favorite mecha designs?

I don't mean favorite overall mecha, or most badass. I want to know what your favorite giant robots are, based purely on the expressiveness and functionality of their design.

For example, I absolutely love the Sinanju for how it appears regal and commanding while still looking like a weapon of war. Its enormous shield and gun really sell how dangerous it is, but still match the almost ceremonial look of its armor.