Published Jan 1967 by Marvel.
Cover by Don Heck. Quicksilver and the Scarlet Witch return in "The Ultroids Attack!", script by Roy Thomas, art by Don Heck; The Scarlet Witch returns, and she explains that Quicksilver has been kidnapped by a UFO; Hawkeye tries to apply Black Widow for membership, but Goliath refuses; The Avengers fly to the Balkans, accompanied by the Black Widow; There they discover a huge computer, named Ixar, draining information from the village's Burgomeister; Ixar's plan is to extract the powers from the Avengers and use it to make special Ultroids; They also discover Scarlet Witch to be a fake Ultroid called Ultrana; Ultrana and the Ultroids attack the Avengers, capturing them; As the Black Widow is not an Avenger, she is sent to be destroyed. Avengers roll call: Captain America, Hawkeye, Goliath, and the Wasp. Black Widow appearance. Reprinted in Marvel Triple Action #28. 36 pgs., full color. $0.12. Cover price $0.12.