Looking in on Superboy-Prime (the Superboy from an alternate world called
Earth-Prime where super heroes were characters in comic book, taken away after the end of the Crisis On Infinite Earths, only to return, with a psychopathic rage and murdering many heroes including Titans and Bloodlines heroes)....here, in
Adventure Comics #4 and
#5 (January and February, 2010, with covers by
Jerry Ordway, with variants by
Francis Manapul as
#507 and
#508)...
...this Clark Kent was forced to face some of those he killed, brought back as Black Lanterns, with Alexander Luthor Jr. leading the charge (and these stories might also have been his step towards redemption).
Plus back up stories with the Black Witch (Mysa, the former White Witch of the Legion of Super-Heroes), and Superboy/Kon-El as well.
Adventure Comics #4 and #507 (January, 2010)
.
Adventure Comics #5 and #508 (February, 2010)