advance puppet rig system ????

advance puppet rig system ???
how is this possible?

this looks almost like 2d classical animation?

https://www.youtube.com/watch?v=T1VLpYRdbY8
https://www.youtube.com/watch?v=KmdCPxqXvkg
https://www.youtube.com/watch?v=zffikdymFRE

somebody have an idea how this can be made ?

http://download.toonboom.com/files/mifa/HAR_CS_tootpuddle.pdf