SUZY 309 was an automaton created by Robert Holmes. It went rogue when a demon possessed it, causing SUZY to destroy the lab and kill Robert.
Ultimately, SUZY was destroyed by Fineas Von Landingham
A public display of force was what Ozzy wanted. Think she fits the bill? -Robert Holmes The bad news is, that demon has taken control of SUZY. The good news is, we know where she's going. -Susan Franklin (Radar)