Thanos is a Bronze Age creation — there are no Silver Age Thanos issues. His first appearance is Iron Man #55 (February 1973) by Jim Starlin; a CGC 9.8 copy sold for over $13,025 based on documented sales. For a reading guide, three arcs are essential: Thanos Quest #1-2 (1990), The Infinity Gauntlet #1-6 (1991), and the Thanos Wins arc by Donny Cates (2018).

Created by Jim Starlin, Thanos burst into Marvel comics in February 1973 in the pages of Iron Man #55 — the same issue that introduced Drax the Destroyer. He is a Bronze Age character: no Silver Age key exists, despite occasional claims to the contrary. Starlin immediately continued developing the character in Captain Marvel #25-33 (1973-1974), an arc now known as "The Thanos War", then in Warlock #9-15 (1975-1976). That first era closes with Marvel Two-in-One Annual #2 (1977), in which Thanos dies. The great revival came in 1990, when Starlin returned to Marvel alongside penciller Ron Lim: the duo relaunched the character in Silver Surfer #34, then followed with Thanos Quest and The Infinity Gauntlet.

This guide sticks to the verifiable: eBay medians from our estimator (eBay.fr + eBay.com, June 2026) and records documented by the specialist press. The Iron Man #55 eBay median is low because it blends all printings and all grades — high-grade CGC copies occupy an entirely different price bracket. The Thanos Quest and The Infinity Gauntlet series are not covered by our tool: figures cited for those titles come from documented web sources.

Thanos key issues: real eBay data, June 2026

Our estimator covers three key series for Thanos. The Iron Man #55 median reflects a market dominated by low-grade copies and reprints; high-grade CGC copies are an entirely different proposition. Silver Surfer #44 has only 12 active listings — below the 15-listing threshold for a reliable median, and therefore excluded from the table.

IssueSignificanceeBay data (all grades)Record / reference
Iron Man #55 (Feb. 1973)1st appearance of Thanos and Drax the Destroyer — Bronze Age keyMedian €9 · 73 listingsCGC 9.8: $13,025 (Comiclink, 2022)
Silver Surfer #34 (1990)Thanos returns after 13 years — prelude to Thanos QuestMedian €19 · 55 listingsNot publicly documented in high grade
Avengers #125 (1974)End of "The Thanos War" — conclusion of the Captain Marvel arcMedian €9 · 54 listingsNot publicly documented in high grade
Thanos Quest #1-2 (1990)Thanos collects the Infinity Gems — direct prequel to The Infinity GauntletSeries not covered by our toolModern key; CGC 9.8 copies trade in the hundreds of dollars
The Infinity Gauntlet #1-6 (1991)Thanos erases half of all life — the defining eventSeries not covered by our toolCGC 9.8 #1: hundreds of dollars per recent eBay sales

eBay sources: mycomicscollection.com estimator (June 2026). Record sources: Bleeding Cool, Comiclink, sellmycomicbooks.com.

Iron Man #55 (1973): the first appearance, the Bronze Age key

Published in February 1973 and created by Jim Starlin (plot, pencils; Mike Friedrich co-scripted), Iron Man #55 simultaneously introduces Thanos, Drax the Destroyer, Mentor, Starfox, and Kronos — a cosmically ambitious debut for a regular series. Thanos was openly inspired by DC's Darkseid, but Starlin pushed the nihilistic philosophy further by making him a devoted admirer of the personification of Death.

Our estimator returns a median of €9 across 73 listings — a solid listing count that primarily reflects low-grade and reprinted copies. That blended median is deceptively low: a CGC 9.8 (white pages) copy sold for over $13,025 on Comiclink in 2022 according to documented sales. The announcements of Avengers: Infinity War (2018, $2.05 billion worldwide) and Avengers: Endgame (2019, $2.79 billion worldwide — the second-highest-grossing film of all time) drove high-grade copies to new peaks. This is the indispensable key for any Thanos collector.

The Thanos War: Captain Marvel #25-33 and Avengers #125 (1973-1974)

Starlin took over Captain Marvel with issue #25 (1973) and spent nine issues on "The Thanos War": Thanos attempts to seize the Cosmic Cube and dominate the universe. This is where the character gained his epic stature and where Starlin laid the foundations of the cosmic Marvel corner that would absorb much of the decade. The arc concludes in Avengers #125 (1974), for which our estimator returns a median of €9 across 54 listings — a solid entry-level Bronze Age pick. Thanos is officially "killed" in Marvel Two-in-One Annual #2 (1977), only to be resurrected thirteen years later.

Silver Surfer #34 and Thanos Quest #1-2 (1990): the great revival

In 1990 Jim Starlin returned to Marvel and took over the Silver Surfer series. Issue #34, drawn by Ron Lim, marks the spectacular return of Thanos: resurrected by Death herself to correct a perceived cosmic imbalance, he immediately becomes a universal threat again. Our estimator returns a median of €19 across 55 listings for this issue — the most accessible of the three eBay-covered keys.

Thanos Quest #1-2 (September-October 1990, Starlin writing, Lim drawing) quickly followed: Thanos travels the universe to steal the six Infinity Gems from their keepers. This two-issue limited series is the direct prequel to The Infinity Gauntlet and makes an excellent modern entry point — the story is dense, self-contained, and beautifully paced. It is not covered by our estimator, but CGC 9.8 copies are available in the hundreds of dollars.

The Infinity Gauntlet #1-6 (1991): the definitive Thanos story

Published from July to December 1991 and written by Jim Starlin, with pencils by George Pérez (issues #1-2 and contributions) and Ron Lim (issues #3-6), The Infinity Gauntlet is the most ambitious cosmic Marvel event of the era and one of the most influential storylines of the 1990s. Armed with all six Infinity Gems assembled in the gauntlet, Thanos snaps his fingers and erases half of all life in the universe, an offering to Death. The surviving heroes — Warlock, Silver Surfer, the Avengers — unite to wrest the gauntlet from him. This miniseries is the direct source material for the Infinity War and Endgame films. Our tool does not index this series; CGC 9.8 copies of issue #1 trade in the hundreds of dollars on eBay based on recent sales.

Thanos Wins (Thanos vol. 2, #13-18, 2018): the Donny Cates arc

More recent but now essential for cosmic horror fans, the "Thanos Wins" arc is written by Donny Cates in issues #13 to 18 of Thanos vol. 2 (2018). Cates sends a present-day Thanos into a dystopian future in which an older version of himself — the King Thanos — has actually exterminated every living being in the universe. This arc debuts the Cosmic Ghost Rider (Frank Castle, the Punisher, who became a Ghost Rider in the ruins of that universe), a character who went on to headline his own spin-off series. The arc is available in trade paperback and is an ideal entry point for a modern reader who wants to understand why Thanos remains one of Marvel's great villains in the twenty-first century.

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