|Appears in||Lords of Shadow|
|Location|| Electric Laboratory (Chapter 7), The Clockwork Tower (Chapter 8)|
|Tolerances||Dagger x2, Fairy x3|
|Weaknesses||Explosive Dagger, Light Fairy, Holy Water, Crystal x2|
One of the bosses in Lords of Shadow, it was a creation of the mad scientist Friedrich von Frankenstein. It is faced in the Electric Laboratory, when finishing the last part of the level's puzzle. It is later faced again in the Clock Tower, where the fight is much simpler.
After taking out a chunk of his health, the Mechanical Monstrosity will start healing itself using a large lightning machine. Hit the button on the ground with the Black Knight Golem's Dark Gauntlet and the lightning will change color, damaging the boss. Do this a few more times and it will "die".
It returns later in the Clock Tower. Don't worry here, there's a place to refill your magic, so if your health is low, just use Light Magic. Here the Monstrosity will use a magnetic field to create a barrier of metal objects that he can toss. Simply repeat the same strategy as in the first fight, except here the Monstrosity doesn't recover its health. Its attacks are more powerful and it can be hard to avoid when tossing all objects at once, but beyond that, it ain't much of a problem. When its health has almost run out and the creature is stunned, just grab it for the timed event and the fight is over.<gallery>
- The Mechanical Monstrosity seems like Lords of Shadow version of the Creature, Frankenstein's abomination. Both use lightning to fight, and both were created by Dr. Frankenstein. Besides, the Monstrosity has a fleshy, baby-like core, showing it is a partly organic creature too.
- The Mechanical Monstrosity bears an uncanny resemblance to the real world whip spider, an arachnid with heavy, spiked pedipalps that it uses to capture prey.