Green Lantern 2005 run # 23. But to be fair, I don't read Green Lantern, only reason I knew this was because I know (and love) the iconic cover this homages and flicked through comixology's GL sale earlier today.
Hint: nth Print Spoiler Click to see actual cover Winners: Dead Metal (Publisher) Dead Metal (Series) Dead Metal (Characters) Dead Metal (Issue)
Spoiler Click to see actual cover Winners: Aernaroth (Series) Aernaroth (Characters) Aernaroth (Issue)
Crisis on Infinite Earths, issue 7. (made a lucky guess on the number and checked my work) Death of Pre-crisis Supergirl Kara-El.
There are 2 characters to be named to win the character spot. Since there are multiple of the same character in this series, state which Earth they belong too. Also if giving Kryptonian names, make sure it's the correct family You're missing something in your answer, Aernaroth.
Its Pre-Crisis Earth One Superman (Kal-El) and his cousin, Pre-Crisis Earth One Supergirl (Kara Zor-El), not that there was an Earth Two Supergirl to my knowledge (unless you count Power Girl as Supergirl). Do we have to name EVERY character on the cover? That is going to be... time consuming in this instance.