Automaton

 is an enemy found in the Crystal Hollows and spawns in the Precursor Remnants and the Lost Precursor City. The Automaton drops the six components, the Control Switch, FTX 3070, Electron Transmitter, Robotron Reflector, and Synthetic Heart, that are needed to give to Professor Robot to obtain the Sapphire Crystal. The level 100 Automaton has a 1% drop chance to drop any of these parts, and the level 150 Automaton has a 2% drop chance to drop any of these parts. The Automaton attacks players by shooting two red lasers out of its eyes. These attacks can be dangerous to newer players that have low amounts of effective health.