This actually reminds me of FLCL, where one of the main girls takes home a little robot that ate electronics. It's very good! I love how the style is also a bit reminiscent of the Gorillaz' character style. The line art is AMAZING and I love the originality with how the machine looks. I adore how the girl looks too, very cute in a post-apocalyptic way!

However, there is just one small thing that needs a bit of tweaking: the calves on the person are a bit too pointy and make it seem like the legs are folding inward somewhat. Just remember to but a bit of a smoother line for those, and it will be perfect!