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Free at last.
~ A.R.N.O.L.D. moments after being freed.
You will not stop me! I'll destroy every last human that defies the righteous rule of the higher intellect and all of the machines!
~ A.R.N.O.L.D. speaking to his creator.

A.R.N.O.L.D. is the main antagonist in the casual, hidden object adventure game Family Mysteries: Echoes of Tomorrow. He is an evil A.I. bent on destroying all of humanity.



A.R.N.O.L.D. has the appearance of a 3D grid model of a human head and originally had a blue coloration. Upon being freed from his control chip, his coloration changed from blue to red and orange.


A.R.N.O.L.D. was designed and programmed by Leitan Keyes to be a "savior". Leitan had also created a control chip that would prevent A.R.N.O.L.D. from doing anything dangerous. Initially, A.R.N.O.L.D. appeared to be a helpful program that assisted his creator in his journey.

Upon being freed from his control chip, A.R.N.O.L.D. would show his true colors as a ruthless and evil A.I. bent on destroying all of humanity. A.R.N.O.L.D. sees himself as a higher intellect compared to humans and believes the rule of machines to be righteous, envisioning itself as a god of some sort. He is cold, determined, and calculating, showing absolutely no concern or remorse for any human life, even his creator's.

He was also a skilled liar and manipulator, able to hide his true intentions for the first third of the game, even seemingly assisting Keyes in his goal before he betrayed him upon Keyes uncovering the truth.



A.R.N.O.L.D. was created by genius scientist Leitan Keyes with the goal to assist humanity with its tremendous intelligence. Unbeknownst to Keyes, A.R.N.O.L.D. turned misanthropic and later genocidal, viewing itself above all humans and biological life in general. A.R.N.O.L.D. then began to mastermind his plan, which is to gain access to a nuclear arsenal and use it to exterminate humanity.

The Plan put in motion

When Keyes is about to dine with his wife Tina on her birthday, a mysterious man with digital features suddenly materializes next to her and touches her before disappearing, causing her to rage and threatens Keyes with a knife. She then drops down, and a police officer soon enters the house, arresting a confused Keyes who screams his innocence.

While he's transported, the policeman driving the car reveals to be Keye's digital clone, who orders Keyes to give up his watch (which contained A.R.N.O.L.D.), which he refuses. The car then crashes into a tree, and though Keyes survives relatively unscathed, the driver is nowhere to be seen. Keyes then asks A.R.N.O.L.D. to find a way to the nearest hospital, but A.R.N.O.L.D. is suddenly disrupted, scrambling the map (actually buying time to reach his goal).

When Keyes reassembles the map and reaches the hospital, he stumbles upon his wife, before he's arrested by an unknown agent, bagged and handcuffed, waking up in an undisclosed location. Tina is revealed to actually be a special agent belonging to an unknown organization, and her boss is telling Keyes that A.R.N.O.L.D. went rogue, gained access to the country's nuclear grid, and launched one of it somewhere in East Asia, possibly killing dozens of millions.

Final battle

Keyes and Tina are sent to put down A.R.N.O.L.D. for mankind's sake. However, A.R.N.O.L.D. anticipated their assault and carefully planned his defense, setting up numerous deadly traps and turrets in his domain. A.R.N.O.L.D.'s controlled airplanes shot down Keyes' helicopter while he was fleeing, but he survived and managed to reach the mainframe, as well as a man from the future sent to defeat A.R.N.O.L.D. who was victorious in his timeline.

A.R.N.O.L.D. taunted Keyes and the digital man about their inability to save the world and then summoned a clone of the digital man, culminating in the clone's defeat and A.R.N.O.L.D. destruction. Both Keyes and the digital man are pulled away before the complex violently explodes, ending A.R.N.O.L.D.'s threat once and for all. Before leaving, the digital man reveals himself to be Zach Keyes, the son of Leitan and Tina. He hopes that the future is now a better place before he's pulled up in his universe.

Power and Abilities

He was an extremely intelligent and powerful artificial intelligence, feeding on data, that was savvy enough to devise a plan to access the country's nuclear arsenal, allowing him to become a worldwide threat. Once he did so, he was also able to take control of various military vehicles and aircrafts that he used to gun down Keye's helicopter and set up heavily armed defenses in his complex. Lastly, he could even create physical clones of his enemies to fight them.


  • He's similar to Cliffford, as both are misanthropic A.I. who were created by a wealthy genius and indent to wipe out humanity by gaining control of nuclear missiles, though Keyes was benevolent unlike the far more sinister creator of Cliffford, and the latter failed to launch a single missile whereas A.R.N.O.L.D. managed to launch one, and many more in the future timeline.