The Avengers #29
In "This Power Unleashed!", the Avengers face a trio of unexpected foes: Power Man, the Swordsman, and a mind-controlled Black Widow, all attacking from within. Meanwhile, Goliath struggles with his own crisis—can he ever return to his normal size? Written by Stan Lee and brought to life by Don Heck’s dynamic pencils and Frank Giacoia’s bold inks, this 1966 Marvel classic captures the team at a tense crossroads, with the cover by Heck and Giacoia perfectly capturing the chaos.
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Reprinted in Los Vengadores #72 (1967), Fantastic! #58 (1968), Fantastic! #59 (1968), Los Vengadores #12 (1970), Il Mitico Thor #38 (1972), The Avengers #26 (1974), Marvel Triple Action #23 (1975), Die ruhmreichen Rächer #28 (1976), Submariner #1 (1976), Los Vengadores #29 (1981), Marvel Masterworks #27 (1994), Essential Avengers #2 (1998), Marvel Masterworks: The Avengers #3 (2004), Avengers : L'intégrale #1966 (2008), Avengers #6 (2010), The Avengers Omnibus #1 (2011), Marvel Masterworks: The Avengers #3 (2011), Avengers Epic Collection #2 (2016), Black Widow Epic Collection #1 (2019), The Black Widow Strikes Omnibus #[nn] (2019), Mighty Marvel Masterworks: The Avengers #3 (2023), Marvel Origins #50 (2025), Marvel Origins #53 (2025), Les Vengeurs #26
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