M.O.D.O.K. Fact — October 21, 2026

Today's Fact

Verified against four independent sources. Issue cited below.

A.I.M. BUILT A LIVING COMPUTER — AND IT RENAMED ITSELF FOR KILLING!

The Featured Fact

Before the giant head, the Doomsday Chair, and the world-conquest schemes, there was just George Tarleton — an ordinary, lowly A.I.M. (Advanced Idea Mechanics) technician. A.I.M. had just created the Cosmic Cube, and it needed a mind big enough to study and improve it. So its scientists picked Tarleton, forced him into the Alteration Chamber, and mutated him with advanced mutagenics into a living computer.

Here is the part most retellings skip: he was not born M.O.D.O.K. His first name was M.O.D.O.C. — Mental Organism Designed Only for Computing. The mutation worked exactly as designed and then some: his brain swelled to superhuman intellect, he gained psychic and psionic powers, and his body withered around his giant cranium until he needed a weaponized life-support hoverchair — the Doomsday Chair — just to move.

The computer, it turned out, had ambitions beyond computing. Tarleton murdered his creators, including the Scientist Supreme, seized control of A.I.M., and gave himself a promotion in the form of a single-letter edit: he re-dubbed himself M.O.D.O.K. — Mental Organism Designed Only for Killing. A.I.M. built a machine to think. The machine decided to kill. His full reveal came in Tales of Suspense #94 (October 1967), by Stan Lee & Jack Kirby, where he announces it himself: "Once, I was a mere human guinea pig for the scientists of AIM!... I AM THEIR MASTER!!"

Why It's Obscure

Everyone knows the giant head. Almost nobody remembers that the "K" in M.O.D.O.K. was a self-awarded promotion — A.I.M. hired him to compute, and his first act as a super-genius was to rebrand himself for murder and take over the company that made him.

1967

Tales of Suspense #93 (Sept 1967) — M.O.D.O.K.'s cameo, then his full reveal in #94 (Oct 1967), by Stan Lee & Jack Kirby. In his own words: "Once, I was a mere human guinea pig for the scientists of AIM!... I AM THEIR MASTER!!" The employee review came with a body count.

C → K

The one-letter rebrand. M.O.D.O.C. stood for Computing; M.O.D.O.K. stands for Killing. He did not just take over A.I.M. — he edited his own job description, and the new title stuck for nearly sixty years. Human Resources never recovered.

1967

The Cosmic Cube connection. A.I.M. did not mutate Tarleton for fun — the experiment existed to analyze and improve the Cosmic Cube it had just created. The living computer was a research tool that immediately unionized, violently, into management.

Trivia

Even Tarleton's résumé is disputed. Marvel Database notes several conflicting accounts of his pre-A.I.M. life: a skilled technician from Erie, Pennsylvania in one, a Bangor, Maine native whose father said he was hired as a janitor in another. The one thing every account agrees on: the job ended badly for his bosses.

2010

The human came back. In Hulk (2010), Amadeus Cho restored Tarleton to human form — and a M.O.D.O.K. clone, M.O.D.O.K. Superior, was created to replace him. The original employee left the building; the job title stayed.

Gallery

Comic art from Marvel sources — no AI imagery, nothing mislabeled.

Interior panel from Tales of Suspense #94 (1967) by Jack Kirby: M.O.D.O.K. in his Doomsday Chair declaring 'I AM MODOK!! Once, I was a mere human guinea pig for the scientists of AIM!... I AM THEIR MASTER!!' as Captain America lies on the floor — **Tales of Suspense #94 (1967)**Kirby's full reveal: "Once, I was a mere human guinea pig for the scientists of AIM!" — the ex-technician announcing his promotion to master of A.I.M.

Modern comic art of M.O.D.O.K.: a close-up of his giant head in the gold Doomsday Chair, eyes glowing, headband lit — **M.O.D.O.K., modern era**The finished product of A.I.M.'s experiment: the giant head, the glowing headband, and the Doomsday Chair — via Marvel.com's Fall of the Hulks-era art.

Sources

Every claim above is verified against at least two of these independent sources.

Bullpen Bulletins

M.O.D.O.K. In Comics — Marvel.comOrigins: Tarleton was "plucked by the Scientist Supreme and forced into the Alteration Chamber to turn him into a living computer originally conceived as M.O.D.O.C. – a Mental Organism Designed Only For Computing – to help them build the Cosmic Cube," then "re-dubbing himself the Mental Organism Designed Only For Killing, M.O.D.O.K.!"
George Tarleton (Earth-616) — Marvel Database"A lowly American technician working for A.I.M.... He joined the team to help develop the Cosmic Cube, but was mutated into a human computer by the Scientist Supreme"; formerly M.O.D.O.C. (Computing), now M.O.D.O.K. (Killing); also notes the conflicting pre-A.I.M. accounts.
Don't Mess With the Head: The Very Best of M.O.D.O.K. — Marvel.comTales of Suspense #94: Tarleton, "a humble Advanced Ideas Mechanics (A.I.M) scientist," was subjected to "experimental mutagenics" and became "M.O.D.O.C., Mental Organism Designed Only for Computing," then "morphed into M.O.D.O.K. by murdering his former co-workers and declared himself the new leader of A.I.M."
MODOK — WikipediaCorroborates: Tarleton, an A.I.M. technician, was altered with advanced mutagenics after A.I.M. created the Cosmic Cube, becoming MODOC (Computing), then killed his creators, took control of A.I.M., and renamed himself MODOK (Killing); first appearance Tales of Suspense #94 (Oct 1967), Stan Lee & Jack Kirby.