I've been thinking of this hybrid idea for a while... both are monotreme, so I thought it'd be an interesting idea to mix a platypus and an echidna...

So I imagine the hybrid was have a feral brown furred platypus torso, with golden yellow spines/quills [slightly light brown at the tips] on his back hidden amongst the fur (only barely poking out, but much more visual when scared); the face having a navy blue elongated & slender snout (the head like an echidna); and finally the feet would be navy blue and webbed platypus feet (which includes the platypus's spurs on each of the hind feet), with a black flat but broad platypus tail.

I'm just not sure if it would look as good as it sounds.... either way I found a name for him: Dav Patin.