This mechanical character was modelled by [Disney Research](https://www.disneyresearch.com/project/mechanical-characters/)
(ACM SIGGRAPH 2013) and accurately reproduced in 3D by [trinityscsp](https://grabcad.com/library/man-pushing-1). To create the animated character, I have imported the CAD file in Blender. The mechanism was rigged using bones.
For details on how to rig mechanisms in **Blender**, you may watch this [video tutorial](https://youtu.be/t1GmLAVeySY).
The pushing man designed by Disney Research can be seen in this [video](https://youtu.be/DfznnKUwywQ).