Thanks guys!
Small update - managed to paint the scientist from the same pack as the Steel Mask. Meet the dastardly scientist, Herr Grips (Which I believe/hope translates to 'Mr Brains').
Went for a 'Bluey whiteness' with his coat, instead of the grey I've tried previously.
The Machine is a lightly modified and painted radiator thermostat I found in the street.