Adventures of Superman: Jon Kent (2023) #2

Kal-Els across the Multiverse are being murdered…and the culprit is the man who stole Jon Kent's childhood! Jon is joined by Earth-2's Superman, Val-Zod, and a surprise third hero to try to stop Ultraman's killing spree. But when Jon comes face-to-face with the man who tortured him and kept him imprisoned, he discovers an even greater threat!