Superboy #63
Knockout and the Challengers of the Unknown crash into Black Zero's fortress! She learns Westfield burned HER Superboy as he took the hyper-jacket. She throws him on the Hyperium and he disintegrates, as do ALL Westfields! Black Zero grabs Knockout to do the same. The heroes surrender. Locked in the Doomsday Chamber, the Challengers tell how they got here. The Challengers of Superboy's world disappeared the same way: these are the originals! Superboy opens the door as the Doomsdays break out, but Knockout shoos the heroes out and seals the door. Without her Superboy, she'll fight to the death.
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Knockout and the Challengers of the Unknown crash into Black Zero's fortress! She learns Westfield burned HER Superboy as he took the hyper-jacket. She throws him on the Hyperium and he disintegrates, as do ALL Westfields! Black Zero grabs Knockout to do the same. The heroes surrender. Locked in the Doomsday Chamber, the Challengers tell how they got here. The Challengers of Superboy's world disappeared the same way: these are the originals! Superboy opens the door as the Doomsdays break out, but Knockout shoos the heroes out and seals the door. Without her Superboy, she'll fight to the death.
Plot details indexed by the Grand Comics Database (CC BY-SA).