In my mind the Combine Ninja is the cutest of all the Ogre models issued by Steve Jackson Games. There is something about the proportions that make it look sleek, fast and tidy.
Here is what the bottom looks like when one has embedded the magnets in Milliput.
And finally a close-up of the magnets and how I've strengthened the joints with fillets of Milliput around the rear body joint. This prevent the magnet from being sheered off, as super glue is not good at handling sheer forces, whereas Milliput does.