Here’s a few more to look for ( Other than Avengers 6 and the first Toyman they should be easy to find )
Shadows and Light 1 ( First Red Room )
Agent Carter and the Avengers 2 trailer both appear to contain elements of the Red Room. If you don’t what that is it’s time to look it up. As far as I can tell this is the first appearance.
Avengers 6 (First Baron Zemo/ First Masters of Evil )
This one is going to be pricey but with Zemo cast for Cap 3 you better hope you have one!
Astro Boy 1 ( Gold Key )
The team that brought you the Lego Movie is working on a live adaptation of Astro Boy!
Dark Horse Insider 37 ( First Ghost in the Shell )
Ghost in the Shell first appeared in Young Magazine but this one is the first American appearance of the work. With the cost of the Dark Horse series rising every day this one might be a sleeper.
Action Comics 573 ( First Matt Trakker )
G.I. Joe 3 might add M.A.S.K. character Matt Trakker?!?! If they do look to Legends 1, Mask 1-4 and this preview!
Adventures of Superman 465 ( First Hank Henshaw )
Supergirl needs villains too and the rumor is Hank Henshaw will be a part of the show.
Adventures of Superman 466 ( First Hank Henshaw as a cyborg )
Action Comics 64( First Toyman)
More Supergirl Spec here. This one will never be cheap though.
Superman 78 ( First Hank Henshaw Cover )
Despite overprinting this comic remains Cyborg Superman’s best cover.
The Titans script has leaked, cast includes Starfire and…
Dc Comics Presents ( First Raven )
First Rachel Roth of titans Tomorrow by G. Johns
Suicide Squad 23 ( First Oracle )
Hawk and Dove 1 ( First Dawn Granger )
Showcase 75 First Hawk ( Hank Hall )