This is the type 2 walking balance robot. Lets call it the Rocking Robot do to the way it operates. video of action can be seen here. https://youtu.be/dThlSK1WbHY
video of the build can be seen here. https://youtu.be/p1PtMFnb5QI
This robot design uses two gear motors both are the TT gearmotor type . The one used for the walking is a 1:120 type as it is geared down more for the walking speed. The one used for the body rocking is the faster 1:48 type. Two AA batteries supply the power and ballast in the feet.

Prusa

I3 MK3S

No

No

0.2

20

I did use a raft on the optional side guns as they print vertical and might come lose from the print bed other wise.