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Origin of Thanos and Gamora
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Battle of Thanos vs Magus
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2nd cameo appearance of the In-Betweener
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Introduction of Sanctuary, Thanos' Citadel
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Recap of Thanos, an interlude hosted by Captain Marvel that explains the character
Issue Details
| Publisher | Marvel |
| Artist | Jim Starlin |
| Writer | Jim Starlin |
| Published | December 1975 |