Calculator (Arrowverse)

"If you want to make a statement you don't take down the system. You take down a city!"

- The Calculator to Felicity

The Calculator is a villain in the fourth season of Arrow. Additional to being a skilled hacker and cyberterrorist, he is the father of Felicity Smoak.

He is portrayed by Tom Amandes.

History
After finding out Roy Harper's secret, he blackmails him into stealing parts for building a web nuke. To assure Roy's loyalty, he watches him through a lens in his right eye, allowing him to see everything Roy sees. While Roy is stealing the last part, a battery from Palmer Tech, he is stopped by Oliver and his team. Oliver shoots him with a special arrow, making it seem like Roy has been killed. They then remove the lens, now disfunctional, and bring Roy to the Arrowcave. There, Roy briefs them about his employer, the Calculator.

While hacking into the Calculator's network, Felicity is called by the man himself. He acknowledges his opponent's talent, not knowing that Felicity is a woman because she modifies her voice. When by Felicity, he tells her that he has no interest in taking down the internet. Additionally, he tells her that if one wants to make a statement he doesn't shut down a AAAA, he shuts down a city. He then locks Felicity out of his network, blocking her from attacking him further.

By help of technology from Palmer Tech, Felicity is able to hack the Calculator again and finds out that the Calculator is planting his bomb at a data farm at Flint Hill and informs Olliver, who immediately heads there. Meanwhile, a group of mercenaries the Calculator hired on the dark web install the device, informing the Calculator after having done so. He is happy with their progress, but tells them to hang on a moment when his firewall finds a worm in his network, as Felicity has once again hacked him. While the Calculator virtually fights Felicity, Oliver and Team Arrow attack and defeat his men. During their hacking race, the Calculator and Felicity conversate via loudspeaker and the Calculator tells her that after the web nuke has gone online it will kill three thousand people by blowing the gas mains alone, not counting the thousands more who will be killed in the subway carts. He arrogantly tells her that the only way to stop him would be manually disarming the device, but as she is behind her computer she will never reach it in time. When the nuke is ready to execute, he tells Felicity that he acknowledges her talent and almost feels bad for beating her. However, when he presses the button to activate his web nuke, he is shocked to see that Felicity managed to overpower him. As he is now trying to break into her system to be able to controll his own, Felicity advises her Team to quickly blow up the web nuke to prevent it from being activated. As the Calculator is blocking the frequency, Roy stays behind to manually lit the C4. Outrunning the blast, Roy is able to save himself in time but the building and the web nuke are destroyed. After the team returns, Felicity tells them that she has installed a virus in the Calculator's computer, deleting every information he had on Roy.

The next day, Felicity presents a revolutionary battery, able to power an entire building, at PalmerTech. Among the people watching the presentation is Oliver who, unbeknownst to him, is sitting next to the Calculator whose face he has never seen. While everybody is applauding the presentation, the Calculator leans over to Oliver, jovially telling him that Felicity is "something else". Smiling, Oliver tells him that he has no idea. After Oliver and Felicity talk about the presentation, Felicity stays at PalmerTech to debrief with Curtis. When she turns, the Calculator is standing beside him and Felicity is glad to see him, recognising him as her father.

Trivia

 * Felicity multiple times criticizes his nickname as unimaginative
 * He has been mentioned in Seasons 2 and 3
 * He claims to be addicted to funny cat videos