My own stab at Rocktopus using Dr. Bravestone Bust. Body and legs designed in Fusion 360 and joined in Blender.

Added a short-legged version that fits on any 200x200 bed

just a tiny support enforcer needed under the chin
 

once the legs are printed you can push them in the body from the bottom up.

Not pre-sliced since all my printers are custom