Clockwork Cyberman

In parallel time line of 51 st century, on the damaged starship, captain issues order to repair clockwork droids: "To tend to wounded crew members and keep them alive by necessary until help arrives".

Helpful, but following orders to the letter, clockwork robot saves the dying crewman by fusing still living brain on his clockwork armature, thus releasing once more the thereat of CYBERMAN upon on the Universe...

Fusion of two my favorite monsters from Doctor Who show:

Clockwork Droid + Cyberman = Clockwork Cyberman