EVE from WALL-E. Fully animated, though the mining action can be a little strange. Consider liking if you download the mech, it really helps with motivation.

Resources needed: 104 Titanium, 196 Electromagnetic Matrices, 16 Magnets
If you can't afford the titanium cost, plastic works fine, you just have to turn the texture off by changing the alpha value in the color menu inside the mech editor.

Showcase video: https://youtu.be/2OhUhjkEnc4
How EVE was made: https://youtu.be/zcQzbQ_o0q0

Creation #2