Atomic Robo is an American comic book series created by 8-Bit Theater writer Brian Clevinger and artist Scott Wegener, depicting the adventures of the eponymous character, a self-aware robot built by Nikola Tesla.

Free Comic Book Day '08: The Tsar Bomb stars Atomic Robo who must stop a rogue Russian scientist from destroying the atmosphere.

Free Comic Book Day '12: Team Up - to stop the Large Hadron Collider from destroying the universe, Atomic Robo must join forces with his most hated foe - Dr Dinosaur.

Robo must contend with repeated assassination attempts orchestrated by an unknown enemy with seemingly limitless influence and resources, with the fate of all life on Earth hanging in the balance.

In the aftermath of World War II, Robo joins forces with a mercenary band of rocket-pack flying women to stop a rogue Japanese super-science counter-attack on America.

While the top-secret government agency Majestic 12 assaults Tesladyne Island, Robo and his team of Action Scientists become trapped in Hollow Earth, whose inhabitants have fallen under the control of Dr Dinosaur.

[14] He is a core member of Tesladyne Industries, "a thinktank dedicated to exploring the fringes of scientific inquiry", whose Action Scientists often respond to paranormal and supernatural emergencies.

Jenkins was formerly part of Majestic 12, a government paramilitary organization dedicated to the collection and use of advanced technologies which opposes Tesladyne.

[18] The Sparrow is a covert British spy with whom Robo teams up to take down Skorzeny and Vanadis during World War II.

James Milligan is loosely based on Wegener's grandfather, who shares the same name and nickname and also fought in World War II.

He adapted their Zen archery to guns, after which he returned to civilization to inherit the family fortune and become a businessman by day and crime-fighter by night.

Carl Sagan, an astrophysicist who helps Robo conduct experiments to observe a theoretical intersection of exo-versal material in the Urubama Valley of Peru in 1971.

He is known for creating ramshackle yet mostly functional contraptions and successful schemes that should be scientifically impossible, claiming "crystals" enables them to work.

He returns in "The Vengeful Dead" to act as a quasi-ally against invading vampire forces, and works as a dubiously reliable employee of Robo's afterwards.

Majestic 12 is a top secret government agency tasked with weaponizing so-called "Tesla-tech" uncovered by the FBI in the wake of Nikola Tesla's mysterious death.

Founded by President Truman, under the advice of Secretary of Defense Forrestal in 1947, Majestic 12 becomes Task Force ULTRA after the events of Atomic Robo and the Savage Sword of Dr. Dinosaur.

After the subsequent mishandling of a global Biomega crisis and their restrictive chokehold on the scientific world comes to light during volume ten, The Ring of Fire, ULTRA is quietly reorganized into ASTRA.

Baron Heinrich Von Helsingard, one of Robo's major enemies, is a Nazi scientist who has attempted to gain immortality, along with godlike power and world domination.

He is able to escape the Nazi Persecution and ends up working for Mossad, much like his real-life counterpart, but soon after finds that he is dying of cancer due to his many experiments.

Following an experiment from 1931 seeking to harness the Odic medium into an immortality drug, he has been transformed into a ghost-like entity that materialized in 1999 in Robo's office complex.

The CHOKAITEN are a rogue group of elite Japanese soldiers who seek to destroy North America with an "earthquake bomb" in 1951.

[23] In 2016, Evil Hat published Majestic 12, a supplement for Atomic Robo: The Roleplaying Game, written by Olson and Clevinger, with several pieces of new art by Wegener.