- Roy Thomas
- Barry Windsor-Smith [as Barry Smith]
- Syd Shores
- Artie Simek
- Goliath [Clint Barton]; Yellowjacket [Hank Pym]; Wasp; Vision; Iron Man [Tony Stark]; Thor; Ultron-6 (first appearance as Ultron-6); Dr. Myron MacLain (introduction)
Avengers versus Ultron-6. Continued for the next 2 issues.
First mention and use of adamantium in the Marvel Universe as Ultron-6's exo-skeleton.